Improves instance handling for Navisworks sends

This change introduces instance definition caching and reuse during Navisworks sends. It significantly optimizes performance for models with many instances by creating references to shared definitions. A new `CreateInstanceReference` method constructs lightweight instance objects that reference the converted definition and store instance-specific transforms. The `GetInstanceTransform` method extracts transformation matrices from Navisworks instances.
2025-09-26 13:11:06 +02:00
379 changed files with 9940 additions and 9630 deletions
@@ -1,16 +1,13 @@
-name: .NET Test
+name: .NET Build

-on:
-  pull_request: {}
-  push:
-    branches: ["main"]
+on: pull_request

 jobs:
-  test:
-    runs-on: ubuntu-latest
+  build:
+    runs-on: windows-latest
    steps:
      - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
        with:
          fetch-depth: 0

@@ -20,23 +17,40 @@ jobs:
          dotnet-version: 8.0.4xx # Align with global.json (including roll forward rules)

      - name: Cache Nuget
-        uses: actions/cache@v5
+        uses: actions/cache@v4
        with:
          path: ~/.nuget/packages
          key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}

-      - name: ⚒️ Run Test
-        run: ./build.sh test-and-pack
+      - name: ⚒️ Run build
+        run: ./build.ps1 test
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: 8.0.4xx # Align with global.json (including roll forward rules)
+
+      - name: Cache Nuget
+        uses: actions/cache@v4
+        with:
+          path: ~/.nuget/packages
+          key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
+
+      - name: ⚒️ Run Build on Linux
+        run: ./build.sh build-linux
+
+      - name: ⚒️ Run tests
+        run: ./build.sh test-only

      - name: Upload coverage reports to Codecov with GitHub Action
        uses: codecov/codecov-action@v5
        with:
          files: Converters/**/coverage.xml
          token: ${{ secrets.CODECOV_TOKEN }}
-
-      # Disabling this code for now, since we no longer need to publish nugets from this repo
-      # But keeping it around incase we ever need in the future.
-      # Ideally, I'd also like to move the nuget token to be an environment secret, and to have tight package scopes
-#      - name: Push to nuget.org
-#        if: ${{ inputs.deployNugets }}
-#        run: dotnet nuget push output/*.nupkg --source "https://api.nuget.org/v3/index.json" --api-key ${{ secrets.CONNECTORS_NUGET_TOKEN }}
@@ -6,8 +6,8 @@ on:
    tags: ["v3.*.*"] # Manual delivery on every 3.x tag

 jobs:
-  build-connectors:
-    runs-on: windows-latest # Keeping on windows for now, for cross platform building of exe projects, we need to use dotnet publish
+  build-windows:
+    runs-on: windows-latest
    env:
      SEMVER: "unset"
      FILE_VERSION: "unset"
@@ -16,7 +16,7 @@ jobs:
      file_version: ${{ steps.set-version.outputs.file_version }}
    steps:
      - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v5
        with:
          fetch-depth: 0

@@ -26,16 +26,16 @@ jobs:
          dotnet-version: 8.0.4xx # Align with global.json (including roll forward rules)

      - name: Cache Nuget
-        uses: actions/cache@v5
+        uses: actions/cache@v4
        with:
          path: ~/.nuget/packages
          key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}

-      - name: ⚒️ Run build and zip connectors
+      - name: ⚒️ Run build on Windows
        run: ./build.ps1 zip

      - name: ⬆️ Upload artifacts
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@v4
        with:
          name: output-${{ env.SEMVER }}
          path: output/*.*
@@ -48,10 +48,10 @@ jobs:
        run: |
          echo "semver=${{ env.SEMVER }}" >> "$Env:GITHUB_OUTPUT"
          echo "file_version=${{ env.FILE_VERSION }}" >> "$Env:GITHUB_OUTPUT"
-          
+
  deploy-installers:
    runs-on: ubuntu-latest
-    needs: build-connectors
+    needs: build-windows
    env:
      IS_PUBLIC_RELEASE: ${{ github.ref_type == 'tag' }}
    steps:
@@ -63,8 +63,8 @@ jobs:
          token: ${{ secrets.CONNECTORS_GH_TOKEN }}
          inputs: '{
            "run_id": "${{ github.run_id }}",
-            "semver": "${{ needs.build-connectors.outputs.semver }}",
-            "file_version": "${{ needs.build-connectors.outputs.file_version }}",
+            "semver": "${{ needs.build-windows.outputs.semver }}",
+            "file_version": "${{ needs.build-windows.outputs.file_version }}",
            "repo": "${{ github.repository }}",
            "is_public_release": ${{ env.IS_PUBLIC_RELEASE }}
            }'
@@ -74,8 +74,42 @@ jobs:
          wait-for-completion-timeout: 10m
          display-workflow-run-url: true
          display-workflow-run-url-interval: 10s
-      
-      # Allows us to inspect the artifacts of failed builds, since this below step will be skipped if the above step fails
+
      - uses: geekyeggo/delete-artifact@v5
        with:
          name: output-*
+
+  build-linux:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v5
+        with:
+          dotnet-version: 8.0.4xx # Align with global.json (including roll forward rules)
+
+      - name: Cache Nuget
+        uses: actions/cache@v4
+        with:
+          path: ~/.nuget/packages
+          key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
+
+      - name: ⚒️ Run tests on Linux
+        run: ./build.sh test-only
+
+      - name: ⚒️ Run Build and Pack on Linux
+        run: ./build.sh build-linux
+
+      - name: Upload coverage reports to Codecov with GitHub Action
+        uses: codecov/codecov-action@v5
+        with:
+          files: Converters/**/coverage.xml
+          token: ${{ secrets.CODECOV_TOKEN }}
+
+      - name: Push to nuget.org
+        if: (github.ref_type == 'tag')
+        run: dotnet nuget push output/*.nupkg --source "https://api.nuget.org/v3/index.json" --api-key ${{secrets.CONNECTORS_NUGET_TOKEN }} --skip-duplicate
@@ -7,9 +7,9 @@ using static SimpleExec.Command;
 const string CLEAN = "clean";
 const string RESTORE = "restore";
 const string BUILD = "build";
-const string PACK = "pack";
-const string TEST_AFFECTED = "test-affected";
+const string BUILD_LINUX = "build-linux";
 const string TEST = "test";
+const string TEST_ONLY = "test-only";
 const string FORMAT = "format";
 const string ZIP = "zip";
 const string RESTORE_TOOLS = "restore-tools";
@@ -19,7 +19,6 @@ const string GEN_SOLUTIONS = "generate-solutions";
 const string DEEP_CLEAN = "deep-clean";
 const string DEEP_CLEAN_LOCAL = "deep-clean-local";
 const string DETECT_AFFECTED = "detect-affected";
-const string TEST_AND_PACK = "test-and-pack";

 //need to pass arguments
 /*var arguments = new List<string>();
@@ -151,7 +150,7 @@ Target(

 Target(
  RESTORE,
-  DependsOn(FORMAT),
+  DependsOn(FORMAT, DETECT_AFFECTED),
  Consts.Solutions,
  async s =>
  {
@@ -182,8 +181,8 @@ Target(CHECK_SOLUTIONS, Solutions.CompareConnectorsToLocal);
 Target(GEN_SOLUTIONS, Solutions.GenerateSolutions);

 Target(
-  TEST_AFFECTED,
-  DependsOn(DETECT_AFFECTED, BUILD, CHECK_SOLUTIONS),
+  TEST,
+  DependsOn(BUILD, CHECK_SOLUTIONS),
  async () =>
  {
    foreach (var s in await Affected.GetTestProjects())
@@ -193,12 +192,14 @@ Target(
  }
 );

+//all tests on purpose
 Target(
-  TEST,
-  DependsOn(BUILD, CHECK_SOLUTIONS),
+  TEST_ONLY,
+  DependsOn(FORMAT),
  Glob.Files(".", "**/*.Tests.csproj"),
  file =>
  {
+    Run("dotnet", $"build \"{file}\" -c Release --no-incremental");
    Run(
      "dotnet",
      $"test \"{file}\" -c Release --no-build --verbosity=minimal /p:AltCover=true /p:AltCoverAttributeFilter=ExcludeFromCodeCoverage /p:AltCoverVerbosity=Warning"
@@ -206,28 +207,31 @@ Target(
  }
 );

-Target(TEST_AND_PACK, DependsOn(TEST, PACK));
-
 Target(
-  PACK,
-  DependsOn(BUILD),
-  Consts.Solutions,
-  async solution =>
+  BUILD_LINUX,
+  DependsOn(FORMAT),
+  Glob.Files(".", "**/Speckle.Importers.Ifc.csproj"),
+  async file =>
  {
+    await RunAsync("dotnet", $"restore \"{file}\" --locked-mode");
    var version = await Versions.ComputeVersion();
    var fileVersion = await Versions.ComputeFileVersion();
    Console.WriteLine($"Version: {version} & {fileVersion}");
+    await RunAsync(
+      "dotnet",
+      $"build \"{file}\" -c Release --no-restore -warnaserror -p:Version={version} -p:FileVersion={fileVersion} -v:m"
+    );

    await RunAsync(
      "dotnet",
-      $"pack \"{solution}\" -c Release -o output --no-build -p:Version={version} -p:FileVersion={fileVersion} -v:m"
+      $"pack \"{file}\" -c Release -o output --no-build -p:Version={version} -p:FileVersion={fileVersion} -v:m"
    );
  }
 );

 Target(
  ZIP,
-  DependsOn(TEST_AFFECTED),
+  DependsOn(TEST),
  async () =>
  {
    var version = await Versions.ComputeVersion();
@@ -278,6 +282,6 @@ Target(
  }
 );

-Target("default", DependsOn(TEST_AFFECTED), () => Console.WriteLine("Done!"));
+Target("default", DependsOn(TEST), () => Console.WriteLine("Done!"));

 await RunTargetsAndExitAsync(args).ConfigureAwait(true);
@@ -16,12 +16,12 @@
      },
      "Microsoft.Build": {
        "type": "Direct",
-        "requested": "[17.11.48, )",
-        "resolved": "17.11.48",
-        "contentHash": "g8Kn575mNAKcuFotV3C7xvF+IbxuHennl67LH2shL2au1U6UqwReTDygCHyU04+koc2Yn7fHIbVQaC08HqEWow==",
+        "requested": "[17.11.4, )",
+        "resolved": "17.11.4",
+        "contentHash": "UMC7DfeFEHY2GGHHaghybUuUlLaByFHEFudR2PehMgDBuRuLAUePp1iaa4eFtVzepRzMtIbeSCVJCzzX3NV2Gg==",
        "dependencies": {
-          "Microsoft.Build.Framework": "17.11.48",
-          "Microsoft.NET.StringTools": "17.11.48",
+          "Microsoft.Build.Framework": "17.11.4",
+          "Microsoft.NET.StringTools": "17.11.4",
          "System.Collections.Immutable": "8.0.0",
          "System.Configuration.ConfigurationManager": "8.0.0",
          "System.Reflection.Metadata": "8.0.0",
@@ -82,8 +82,8 @@
      },
      "Microsoft.Build.Framework": {
        "type": "Transitive",
-        "resolved": "17.11.48",
-        "contentHash": "C3WIMt2wBl4++NX3jSEpTq5KXBhvAV154R4JrYHkfy9JSBcXWiL0mkgpspk5xSdOj+fS/uz7zluIy6bMM1fkkQ=="
+        "resolved": "17.11.4",
+        "contentHash": "u28uDihlqxtt8h2dL1ZJOZ7TRkxBK+HGr+3FgQpILVo7Q7gErkw8mYW9R+RM5PtxvZTdYb/4MWDL66vdIsANBQ=="
      },
      "Microsoft.Build.Tasks.Git": {
        "type": "Transitive",
@@ -97,8 +97,8 @@
      },
      "Microsoft.NET.StringTools": {
        "type": "Transitive",
-        "resolved": "17.11.48",
-        "contentHash": "0IQo089IGBEC4jgtishauZMVr9ZxOWNiGKeDvyzZlvw7p2r253lJh6IJCLLFWXvZnVrVO5mnsYIPamxFPzM08w=="
+        "resolved": "17.11.4",
+        "contentHash": "mudqUHhNpeqIdJoUx2YDWZO/I9uEDYVowan89R6wsomfnUJQk6HteoQTlNjZDixhT2B4IXMkMtgZtoceIjLRmA=="
      },
      "Microsoft.NETFramework.ReferenceAssemblies.net461": {
        "type": "Transitive",
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -312,7 +292,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -356,12 +336,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -312,7 +292,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -356,12 +336,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -313,7 +293,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -155,25 +155,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -229,8 +210,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -262,7 +244,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -306,12 +288,33 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -155,25 +155,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -229,8 +210,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -262,7 +244,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -306,12 +288,33 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -1,296 +0,0 @@
-using Autodesk.AutoCAD.DatabaseServices;
-using Speckle.Connectors.Autocad.HostApp;
-using Speckle.Connectors.Autocad.HostApp.Extensions;
-using Speckle.Connectors.Common.Builders;
-using Speckle.Connectors.Common.Conversion;
-using Speckle.Connectors.Common.Extensions;
-using Speckle.Connectors.Common.Operations;
-using Speckle.Connectors.Common.Operations.Receive;
-using Speckle.Converters.Common;
-using Speckle.Sdk.Common;
-using Speckle.Sdk.Dependencies;
-using Speckle.Sdk.Models;
-using Speckle.Sdk.Models.Collections;
-using Speckle.Sdk.Models.Instances;
-using AutocadColor = Autodesk.AutoCAD.Colors.Color;
-
-namespace Speckle.Connectors.Autocad.Operations.Receive;
-
-/// <summary>
-/// <para>Base class for AutoCAD host object builders. Expects to be a scoped dependency per receive operation.</para>
-/// </summary>
-public abstract class AutocadHostObjectBaseBuilder : IHostObjectBuilder
-{
-  private readonly IRootToHostConverter _converter;
-  private readonly AutocadLayerBaker _layerBaker;
-  private readonly AutocadGroupBaker _groupBaker;
-  private readonly AutocadInstanceBaker _instanceBaker;
-  private readonly IAutocadMaterialBaker _materialBaker;
-  private readonly IAutocadColorBaker _colorBaker;
-  private readonly AutocadContext _autocadContext;
-  private readonly RootObjectUnpacker _rootObjectUnpacker;
-  private readonly IReceiveConversionHandler _conversionHandler;
-
-  protected AutocadHostObjectBaseBuilder(
-    IRootToHostConverter converter,
-    AutocadLayerBaker layerBaker,
-    AutocadGroupBaker groupBaker,
-    AutocadInstanceBaker instanceBaker,
-    IAutocadMaterialBaker materialBaker,
-    IAutocadColorBaker colorBaker,
-    AutocadContext autocadContext,
-    RootObjectUnpacker rootObjectUnpacker,
-    IReceiveConversionHandler conversionHandler
-  )
-  {
-    _converter = converter;
-    _layerBaker = layerBaker;
-    _groupBaker = groupBaker;
-    _instanceBaker = instanceBaker;
-    _materialBaker = materialBaker;
-    _colorBaker = colorBaker;
-    _autocadContext = autocadContext;
-    _rootObjectUnpacker = rootObjectUnpacker;
-    _conversionHandler = conversionHandler;
-  }
-
-  public Task<HostObjectBuilderResult> Build(
-    Base rootObject,
-    string projectName,
-    string modelName,
-    IProgress<CardProgress> onOperationProgressed,
-    CancellationToken cancellationToken
-  )
-  {
-    // Prompt the UI conversion started. Progress bar will swoosh.
-    onOperationProgressed.Report(new("Converting", null));
-
-    // Layer filter for received commit with project and model name
-    _layerBaker.CreateLayerFilter(projectName, modelName);
-
-    // 0 - Clean then Rock n Roll!
-    string baseLayerPrefix = _autocadContext.RemoveInvalidChars($"SPK-{projectName}-{modelName}-");
-    PreReceiveDeepClean(baseLayerPrefix);
-
-    // 1 - Unpack objects and proxies from root commit object
-    var unpackedRoot = _rootObjectUnpacker.Unpack(rootObject);
-
-    // 2 - Split atomic objects and instance components with their path
-    var (atomicObjects, instanceComponents) = _rootObjectUnpacker.SplitAtomicObjectsAndInstances(
-      unpackedRoot.ObjectsToConvert
-    );
-    var atomicObjectsWithPath = _layerBaker.GetAtomicObjectsWithPath(atomicObjects);
-    var instanceComponentsWithPath = _layerBaker.GetInstanceComponentsWithPath(instanceComponents);
-
-    // POC: these are not captured by traversal, so we need to re-add them here
-    if (unpackedRoot.DefinitionProxies != null && unpackedRoot.DefinitionProxies.Count > 0)
-    {
-      var transformed = unpackedRoot.DefinitionProxies.Select(proxy =>
-        (Array.Empty<Collection>(), proxy as IInstanceComponent)
-      );
-      instanceComponentsWithPath.AddRange(transformed);
-    }
-
-    // 3 - Parse and bake proxies (materials and colors), as they are used later down the line by layers and objects
-    if (unpackedRoot.RenderMaterialProxies != null)
-    {
-      _materialBaker.ParseAndBakeRenderMaterials(
-        unpackedRoot.RenderMaterialProxies,
-        baseLayerPrefix,
-        onOperationProgressed
-      );
-    }
-
-    if (unpackedRoot.ColorProxies != null)
-    {
-      _colorBaker.ParseColors(unpackedRoot.ColorProxies, onOperationProgressed);
-    }
-
-    // 3.5 - Parse and bake additional proxies that are needed for conversion
-    ParseAndBakeAdditionalProxies(rootObject, baseLayerPrefix);
-
-    // 4 - Convert atomic objects
-    HashSet<ReceiveConversionResult> results = new();
-    HashSet<string> bakedObjectIds = new();
-    Dictionary<string, IReadOnlyCollection<Entity>> applicationIdMap = new();
-    var count = 0;
-    foreach (var (layerPath, atomicObject) in atomicObjectsWithPath)
-    {
-      onOperationProgressed.Report(new("Converting objects", (double)++count / atomicObjects.Count));
-      var ex = _conversionHandler.TryConvert(() =>
-      {
-        cancellationToken.ThrowIfCancellationRequested();
-        string objectId = atomicObject.applicationId ?? atomicObject.id.NotNull();
-        IReadOnlyCollection<Entity> convertedObjects = ConvertObject(atomicObject, layerPath, baseLayerPrefix);
-
-        applicationIdMap[objectId] = convertedObjects;
-
-        results.UnionWith(
-          convertedObjects.Select(e => new ReceiveConversionResult(
-            Status.SUCCESS,
-            atomicObject,
-            e.GetSpeckleApplicationId(),
-            e.GetType().ToString()
-          ))
-        );
-
-        bakedObjectIds.UnionWith(convertedObjects.Select(e => e.GetSpeckleApplicationId()));
-      });
-      if (ex != null)
-      {
-        results.Add(new(Status.ERROR, atomicObject, null, null, ex));
-      }
-    }
-
-    // 5 - Convert instances
-    var (createdInstanceIds, consumedObjectIds, instanceConversionResults) = _instanceBaker.BakeInstances(
-      instanceComponentsWithPath,
-      applicationIdMap,
-      baseLayerPrefix,
-      onOperationProgressed
-    );
-
-    bakedObjectIds.RemoveWhere(id => consumedObjectIds.Contains(id));
-    bakedObjectIds.UnionWith(createdInstanceIds);
-    results.RemoveWhere(result => result.ResultId != null && consumedObjectIds.Contains(result.ResultId));
-    results.UnionWith(instanceConversionResults);
-
-    // 6 - Create groups
-    if (unpackedRoot.GroupProxies != null)
-    {
-      IReadOnlyCollection<ReceiveConversionResult> groupResults = _groupBaker.CreateGroups(
-        unpackedRoot.GroupProxies,
-        applicationIdMap
-      );
-      results.UnionWith(groupResults);
-    }
-
-    return Task.FromResult(new HostObjectBuilderResult(bakedObjectIds, results));
-  }
-
-  protected void PreReceiveDeepClean(string baseLayerPrefix)
-  {
-    _layerBaker.DeleteAllLayersByPrefix(baseLayerPrefix);
-    _instanceBaker.PurgeInstances(baseLayerPrefix);
-    _materialBaker.PurgeMaterials(baseLayerPrefix);
-    PreReceiveAdditionalDeepClean(baseLayerPrefix);
-  }
-
-  /// <summary>
-  /// Method for adding app-specific additional deep clean of the document prior to receiving.
-  /// </summary>
-  protected virtual void PreReceiveAdditionalDeepClean(string baseLayerPrefix) { }
-
-  /// <summary>
-  /// Method for parsing and baking additional app-specific proxies on the root prior to converting and baking objects
-  /// </summary>
-  protected virtual void ParseAndBakeAdditionalProxies(Base rootObject, string baseLayerPrefix) { }
-
-  private IReadOnlyCollection<Entity> ConvertObject(Base obj, Collection[] layerPath, string baseLayerNamePrefix)
-  {
-    string layerName = _layerBaker.CreateLayerForReceive(layerPath, baseLayerNamePrefix);
-    var convertedEntities = new HashSet<Entity>();
-
-    using var tr = Application.DocumentManager.CurrentDocument.Database.TransactionManager.StartTransaction();
-
-    // 1: convert
-    var converted = _converter.Convert(obj);
-
-    // 2: handle result
-    switch (converted)
-    {
-      case Entity entity:
-        var bakedEntity = BakeObject(entity, obj, layerName, tr);
-        convertedEntities.Add(bakedEntity);
-        break;
-
-      case List<(Entity, Base)> listConversionResult: // this is from fallback conversion for brep/brepx/subdx/extrusionx/polycurve
-        var bakedFallbackEntities = BakeObjectsAsGroup(listConversionResult, obj, layerName, baseLayerNamePrefix, tr);
-        convertedEntities.UnionWith(bakedFallbackEntities);
-        break;
-
-      default:
-        // TODO: capture defualt case with report object here? Same as in Rhino
-        break;
-    }
-
-    tr.Commit();
-    return convertedEntities.Freeze();
-  }
-
-  private Entity BakeObject(
-    Entity entity,
-    Base originalObject,
-    string layerName,
-    Transaction tr,
-    Base? parentObject = null
-  )
-  {
-    var objId = originalObject.applicationId ?? originalObject.id.NotNull();
-    if (_colorBaker.ObjectColorsIdMap.TryGetValue(objId, out AutocadColor? color))
-    {
-      entity.Color = color;
-    }
-
-    if (_materialBaker.TryGetMaterialId(originalObject, parentObject, out ObjectId matId))
-    {
-      entity.MaterialId = matId;
-    }
-
-    entity.AppendToDb(layerName);
-
-    // Hook for derived classes to perform additional operations after entity is added to database
-    PostBakeEntity(entity, originalObject, tr);
-
-    return entity;
-  }
-
-  /// <summary>
-  /// Method for additional app-specific operations on entities after the entity has been added to the document database.
-  /// Called after the entity is added to the database in an open transaction
-  /// </summary>
-  /// <param name="entity"></param>
-  /// <param name="originalObject"></param>
-  /// <param name="tr"></param>
-  protected virtual void PostBakeEntity(Entity entity, Base originalObject, Transaction tr)
-  {
-    // Default implementation does nothing - override in derived classes
-  }
-
-  private List<Entity> BakeObjectsAsGroup(
-    List<(Entity, Base)> fallbackConversionResult,
-    Base parentObject,
-    string layerName,
-    string baseLayerName,
-    Transaction tr
-  )
-  {
-    var ids = new ObjectIdCollection();
-    var entities = new List<Entity>();
-    foreach (var (conversionResult, originalObject) in fallbackConversionResult)
-    {
-      BakeObject(conversionResult, originalObject, layerName, tr, parentObject);
-      ids.Add(conversionResult.ObjectId);
-      entities.Add(conversionResult);
-    }
-
-    if (entities.Count <= 1) // return if empty list or only one, because we don't want to create empty or single item groups.
-    {
-      return entities;
-    }
-    var groupDictionary = (DBDictionary)
-      tr.GetObject(Application.DocumentManager.CurrentDocument.Database.GroupDictionaryId, OpenMode.ForWrite);
-
-    var groupName = _autocadContext.RemoveInvalidChars(
-      $@"{parentObject.speckle_type.Split('.').Last()} - {parentObject.applicationId ?? parentObject.id}  ({baseLayerName})"
-    );
-
-    var newGroup = new Group(groupName, true);
-    newGroup.Append(ids);
-    groupDictionary.UpgradeOpen();
-    groupDictionary.SetAt(groupName, newGroup);
-    tr.AddNewlyCreatedDBObject(newGroup, true);
-
-    return entities;
-  }
-}
@@ -1,35 +1,238 @@
+using Autodesk.AutoCAD.DatabaseServices;
 using Speckle.Connectors.Autocad.HostApp;
+using Speckle.Connectors.Autocad.HostApp.Extensions;
+using Speckle.Connectors.Common.Builders;
+using Speckle.Connectors.Common.Conversion;
+using Speckle.Connectors.Common.Extensions;
 using Speckle.Connectors.Common.Operations;
 using Speckle.Connectors.Common.Operations.Receive;
 using Speckle.Converters.Common;
+using Speckle.Sdk.Common;
+using Speckle.Sdk.Dependencies;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Models.Instances;
+using AutocadColor = Autodesk.AutoCAD.Colors.Color;

 namespace Speckle.Connectors.Autocad.Operations.Receive;

 /// <summary>
-/// <para>AutoCAD-specific host object builder. Expects to be a scoped dependency per receive operation.</para>
+/// <para>Expects to be a scoped dependency per receive operation.</para>
 /// </summary>
-public sealed class AutocadHostObjectBuilder : AutocadHostObjectBaseBuilder
+public class AutocadHostObjectBuilder(
+  IRootToHostConverter converter,
+  AutocadLayerBaker layerBaker,
+  AutocadGroupBaker groupBaker,
+  AutocadInstanceBaker instanceBaker,
+  IAutocadMaterialBaker materialBaker,
+  IAutocadColorBaker colorBaker,
+  AutocadContext autocadContext,
+  RootObjectUnpacker rootObjectUnpacker,
+  IReceiveConversionHandler conversionHandler
+) : IHostObjectBuilder
 {
-  public AutocadHostObjectBuilder(
-    IRootToHostConverter converter,
-    AutocadLayerBaker layerBaker,
-    AutocadGroupBaker groupBaker,
-    AutocadInstanceBaker instanceBaker,
-    IAutocadMaterialBaker materialBaker,
-    IAutocadColorBaker colorBaker,
-    AutocadContext autocadContext,
-    RootObjectUnpacker rootObjectUnpacker,
-    IReceiveConversionHandler conversionHandler
+  public Task<HostObjectBuilderResult> Build(
+    Base rootObject,
+    string projectName,
+    string modelName,
+    IProgress<CardProgress> onOperationProgressed,
+    CancellationToken cancellationToken
  )
-    : base(
-      converter,
-      layerBaker,
-      groupBaker,
-      instanceBaker,
-      materialBaker,
-      colorBaker,
-      autocadContext,
-      rootObjectUnpacker,
-      conversionHandler
-    ) { }
+  {
+    // Prompt the UI conversion started. Progress bar will swoosh.
+    onOperationProgressed.Report(new("Converting", null));
+
+    // Layer filter for received commit with project and model name
+    layerBaker.CreateLayerFilter(projectName, modelName);
+
+    // 0 - Clean then Rock n Roll!
+    string baseLayerPrefix = autocadContext.RemoveInvalidChars($"SPK-{projectName}-{modelName}-");
+    PreReceiveDeepClean(baseLayerPrefix);
+
+    // 1 - Unpack objects and proxies from root commit object
+    var unpackedRoot = rootObjectUnpacker.Unpack(rootObject);
+
+    // 2 - Split atomic objects and instance components with their path
+    var (atomicObjects, instanceComponents) = rootObjectUnpacker.SplitAtomicObjectsAndInstances(
+      unpackedRoot.ObjectsToConvert
+    );
+    var atomicObjectsWithPath = layerBaker.GetAtomicObjectsWithPath(atomicObjects);
+    var instanceComponentsWithPath = layerBaker.GetInstanceComponentsWithPath(instanceComponents);
+
+    // POC: these are not captured by traversal, so we need to re-add them here
+    if (unpackedRoot.DefinitionProxies != null && unpackedRoot.DefinitionProxies.Count > 0)
+    {
+      var transformed = unpackedRoot.DefinitionProxies.Select(proxy =>
+        (Array.Empty<Collection>(), proxy as IInstanceComponent)
+      );
+      instanceComponentsWithPath.AddRange(transformed);
+    }
+
+    // 3 - Bake materials and colors, as they are used later down the line by layers and objects
+    if (unpackedRoot.RenderMaterialProxies != null)
+    {
+      materialBaker.ParseAndBakeRenderMaterials(
+        unpackedRoot.RenderMaterialProxies,
+        baseLayerPrefix,
+        onOperationProgressed
+      );
+    }
+
+    if (unpackedRoot.ColorProxies != null)
+    {
+      colorBaker.ParseColors(unpackedRoot.ColorProxies, onOperationProgressed);
+    }
+
+    // 4 - Convert atomic objects
+    HashSet<ReceiveConversionResult> results = new();
+    HashSet<string> bakedObjectIds = new();
+    Dictionary<string, IReadOnlyCollection<Entity>> applicationIdMap = new();
+    var count = 0;
+    foreach (var (layerPath, atomicObject) in atomicObjectsWithPath)
+    {
+      onOperationProgressed.Report(new("Converting objects", (double)++count / atomicObjects.Count));
+      var ex = conversionHandler.TryConvert(() =>
+      {
+        cancellationToken.ThrowIfCancellationRequested();
+        string objectId = atomicObject.applicationId ?? atomicObject.id.NotNull();
+        IReadOnlyCollection<Entity> convertedObjects = ConvertObject(atomicObject, layerPath, baseLayerPrefix);
+
+        applicationIdMap[objectId] = convertedObjects;
+
+        results.UnionWith(
+          convertedObjects.Select(e => new ReceiveConversionResult(
+            Status.SUCCESS,
+            atomicObject,
+            e.GetSpeckleApplicationId(),
+            e.GetType().ToString()
+          ))
+        );
+
+        bakedObjectIds.UnionWith(convertedObjects.Select(e => e.GetSpeckleApplicationId()));
+      });
+      if (ex != null)
+      {
+        results.Add(new(Status.ERROR, atomicObject, null, null, ex));
+      }
+    }
+
+    // 5 - Convert instances
+    var (createdInstanceIds, consumedObjectIds, instanceConversionResults) = instanceBaker.BakeInstances(
+      instanceComponentsWithPath,
+      applicationIdMap,
+      baseLayerPrefix,
+      onOperationProgressed
+    );
+
+    bakedObjectIds.RemoveWhere(id => consumedObjectIds.Contains(id));
+    bakedObjectIds.UnionWith(createdInstanceIds);
+    results.RemoveWhere(result => result.ResultId != null && consumedObjectIds.Contains(result.ResultId));
+    results.UnionWith(instanceConversionResults);
+
+    // 6 - Create groups
+    if (unpackedRoot.GroupProxies != null)
+    {
+      IReadOnlyCollection<ReceiveConversionResult> groupResults = groupBaker.CreateGroups(
+        unpackedRoot.GroupProxies,
+        applicationIdMap
+      );
+      results.UnionWith(groupResults);
+    }
+
+    return Task.FromResult(new HostObjectBuilderResult(bakedObjectIds, results));
+  }
+
+  private void PreReceiveDeepClean(string baseLayerPrefix)
+  {
+    layerBaker.DeleteAllLayersByPrefix(baseLayerPrefix);
+    instanceBaker.PurgeInstances(baseLayerPrefix);
+    materialBaker.PurgeMaterials(baseLayerPrefix);
+  }
+
+  private IReadOnlyCollection<Entity> ConvertObject(Base obj, Collection[] layerPath, string baseLayerNamePrefix)
+  {
+    string layerName = layerBaker.CreateLayerForReceive(layerPath, baseLayerNamePrefix);
+    var convertedEntities = new HashSet<Entity>();
+
+    using var tr = Application.DocumentManager.CurrentDocument.Database.TransactionManager.StartTransaction();
+
+    // 1: convert
+    var converted = converter.Convert(obj);
+
+    // 2: handle result
+    switch (converted)
+    {
+      case Entity entity:
+        var bakedEntity = BakeObject(entity, obj, layerName);
+        convertedEntities.Add(bakedEntity);
+        break;
+
+      case List<(Entity, Base)> listConversionResult: // this is from fallback conversion for brep/brepx/subdx/extrusionx/polycurve
+        var bakedFallbackEntities = BakeObjectsAsGroup(listConversionResult, obj, layerName, baseLayerNamePrefix);
+        convertedEntities.UnionWith(bakedFallbackEntities);
+        break;
+
+      default:
+        // TODO: capture defualt case with report object here? Same as in Rhino
+        break;
+    }
+
+    tr.Commit();
+    return convertedEntities.Freeze();
+  }
+
+  private Entity BakeObject(Entity entity, Base originalObject, string layerName, Base? parentObject = null)
+  {
+    var objId = originalObject.applicationId ?? originalObject.id.NotNull();
+    if (colorBaker.ObjectColorsIdMap.TryGetValue(objId, out AutocadColor? color))
+    {
+      entity.Color = color;
+    }
+
+    if (materialBaker.TryGetMaterialId(originalObject, parentObject, out ObjectId matId))
+    {
+      entity.MaterialId = matId;
+    }
+
+    entity.AppendToDb(layerName);
+    return entity;
+  }
+
+  private List<Entity> BakeObjectsAsGroup(
+    List<(Entity, Base)> fallbackConversionResult,
+    Base parentObject,
+    string layerName,
+    string baseLayerName
+  )
+  {
+    var ids = new ObjectIdCollection();
+    var entities = new List<Entity>();
+    foreach (var (conversionResult, originalObject) in fallbackConversionResult)
+    {
+      BakeObject(conversionResult, originalObject, layerName, parentObject);
+      ids.Add(conversionResult.ObjectId);
+      entities.Add(conversionResult);
+    }
+
+    if (entities.Count <= 1) // return if empty list or only one, because we don't want to create empty or single item groups.
+    {
+      return entities;
+    }
+
+    var tr = Application.DocumentManager.CurrentDocument.Database.TransactionManager.TopTransaction;
+    var groupDictionary = (DBDictionary)
+      tr.GetObject(Application.DocumentManager.CurrentDocument.Database.GroupDictionaryId, OpenMode.ForWrite);
+
+    var groupName = autocadContext.RemoveInvalidChars(
+      $@"{parentObject.speckle_type.Split('.').Last()} - {parentObject.applicationId ?? parentObject.id}  ({baseLayerName})"
+    );
+
+    var newGroup = new Group(groupName, true);
+    newGroup.Append(ids);
+    groupDictionary.UpgradeOpen();
+    groupDictionary.SetAt(groupName, newGroup);
+    tr.AddNewlyCreatedDBObject(newGroup, true);
+
+    return entities;
+  }
 }
@@ -38,7 +38,6 @@
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Extensions\EntityExtensions.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Extensions\SpeckleApplicationIdExtensions.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\TransactionContext.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Operations\Receive\AutocadHostObjectBaseBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Receive\AutocadHostObjectBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\AutocadRootObject.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\AutocadRootObjectBaseBuilder.cs" />
@@ -178,27 +178,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -289,8 +268,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -322,7 +302,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -366,12 +346,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -178,27 +178,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -289,8 +268,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -322,7 +302,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -366,12 +346,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -178,27 +178,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -289,8 +268,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -322,7 +302,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -366,12 +346,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -164,25 +164,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -238,8 +219,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -272,7 +254,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -316,12 +298,33 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -164,25 +164,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -238,8 +219,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -272,7 +254,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -316,12 +298,33 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -3,8 +3,6 @@ using Microsoft.Extensions.DependencyInjection;
 using Speckle.Connectors.Autocad.DependencyInjection;
 using Speckle.Connectors.Autocad.Operations.Send;
 using Speckle.Connectors.Civil3dShared.Bindings;
-using Speckle.Connectors.Civil3dShared.HostApp;
-using Speckle.Connectors.Civil3dShared.Operations.Receive;
 using Speckle.Connectors.Civil3dShared.Operations.Send;
 using Speckle.Connectors.Common.Builders;
 using Speckle.Connectors.DUI.Bindings;
@@ -26,12 +24,10 @@ public static class Civil3dConnectorModule

    // add receive
    serviceCollection.LoadReceive();
-    serviceCollection.AddScoped<IHostObjectBuilder, Civil3dHostObjectBuilder>();
    serviceCollection.AddSingleton<IBinding, Civil3dReceiveBinding>();

    // additional classes
    serviceCollection.AddScoped<PropertySetDefinitionHandler>();
-    serviceCollection.AddScoped<PropertySetBaker>();

    // automatically detects the Class:IClass interface pattern to register all generated interfaces
    serviceCollection.AddMatchingInterfacesAsTransient(Assembly.GetExecutingAssembly());
@@ -1,404 +0,0 @@
-using Microsoft.Extensions.Logging;
-using Speckle.Connectors.Common.Operations;
-using Speckle.Converters.Civil3dShared;
-using Speckle.Converters.Civil3dShared.Helpers;
-using Speckle.Converters.Civil3dShared.ToSpeckle;
-using Speckle.Converters.Common;
-using Speckle.Sdk;
-using Speckle.Sdk.Models;
-using AAEC = Autodesk.Aec;
-using AAECPDB = Autodesk.Aec.PropertyData.DatabaseServices;
-using ADB = Autodesk.AutoCAD.DatabaseServices;
-
-namespace Speckle.Connectors.Civil3dShared.HostApp;
-
-/// <summary>
-/// Helper class to bake property sets to entities on receive.
-/// </summary>
-public class PropertySetBaker
-{
-  private const string PROP_SET_DEF_DICT_NAME = "AecPropertySetDefs";
-  private readonly IConverterSettingsStore<Civil3dConversionSettings> _settingsStore;
-  private readonly ILogger<PropertySetBaker> _logger;
-  private readonly PropertyHandler _propertyHandler;
-
-  /// <summary>
-  /// Map of property set definition name to its ObjectId. Populated during ParsePropertySetDefinitions.
-  /// </summary>
-  private readonly Dictionary<string, ADB.ObjectId> _propertySetDefinitionMap = new();
-
-  public PropertySetBaker(
-    IConverterSettingsStore<Civil3dConversionSettings> settingsStore,
-    ILogger<PropertySetBaker> logger
-  )
-  {
-    _settingsStore = settingsStore;
-    _logger = logger;
-    _propertyHandler = new PropertyHandler();
-  }
-
-  /// <summary>
-  /// Removes all property set definitions with a prefix before receive operation.
-  /// </summary>
-  public void PurgePropertySets(string namePrefix)
-  {
-    ADB.Database db = _settingsStore.Current.Document.Database;
-    using var tr = db.TransactionManager.StartTransaction();
-
-    List<ADB.ObjectId> definitionsToDelete = new();
-
-    // Access the property set definition dictionary from the named object dictionary
-    var nod = (ADB.DBDictionary)tr.GetObject(db.NamedObjectsDictionaryId, ADB.OpenMode.ForRead);
-
-    if (nod.Contains(PROP_SET_DEF_DICT_NAME))
-    {
-      ADB.ObjectId propSetDefsDictId = nod.GetAt(PROP_SET_DEF_DICT_NAME);
-      var propSetDefsDict = (ADB.DBDictionary)tr.GetObject(propSetDefsDictId, ADB.OpenMode.ForRead);
-
-      // Iterate through all property set definitions in the dictionary
-      foreach (ADB.DBDictionaryEntry entry in propSetDefsDict)
-      {
-        if (entry.Key.Contains(namePrefix))
-        {
-          definitionsToDelete.Add(entry.Value);
-        }
-      }
-    }
-
-    // Delete the matching definitions
-    foreach (ADB.ObjectId defId in definitionsToDelete)
-    {
-      try
-      {
-        var propSetDef = (AAECPDB.PropertySetDefinition)tr.GetObject(defId, ADB.OpenMode.ForWrite);
-        propSetDef.Erase();
-      }
-      catch (Exception ex) when (!ex.IsFatal())
-      {
-        _logger.LogWarning(ex, "Failed to purge property set definition");
-      }
-    }
-
-    tr.Commit();
-  }
-
-  /// <summary>
-  /// Parse and bake all property set definitions from the root object.
-  /// Should be called after purging and after materials/colors are parsed.
-  /// </summary>
-  public void ParseAndBakePropertySetDefinitions(Base rootObject, string namePrefix)
-  {
-    _propertySetDefinitionMap.Clear();
-
-    if (rootObject[ProxyKeys.PROPERTYSET_DEFINITIONS] is not Dictionary<string, object?> definitions)
-    {
-      return;
-    }
-
-    if (definitions.Count == 0)
-    {
-      return;
-    }
-
-    using var tr = _settingsStore.Current.Document.Database.TransactionManager.StartTransaction();
-
-    foreach (var definition in definitions)
-    {
-      string setName = definition.Key;
-      object? setDefObj = definition.Value;
-
-      if (setDefObj is not Dictionary<string, object?> setDefData)
-      {
-        _logger.LogWarning("Property set definition {SetName} has invalid data format", setName);
-        continue;
-      }
-
-      if (!setDefData.TryGetValue(PropertySetDefinitionHandler.PROP_SET_PROP_DEFS_KEY, out var propDefsObj))
-      {
-        _logger.LogWarning("Property set definition {SetName} missing propertyDefinitions", setName);
-        continue;
-      }
-
-      if (propDefsObj is not Dictionary<string, object?> propertyDefinitions)
-      {
-        _logger.LogWarning("Property set definition {SetName} propertyDefinitions has invalid format", setName);
-        continue;
-      }
-
-      ADB.ObjectId defId = CreatePropertySetDefinition(setName, propertyDefinitions, namePrefix, tr);
-      if (!defId.IsNull)
-      {
-        _propertySetDefinitionMap[setName] = defId;
-      }
-    }
-
-    tr.Commit();
-  }
-
-  /// <summary>
-  /// Try to bake property sets from a Speckle object to a Civil3D entity.
-  /// </summary>
-  public bool TryBakePropertySets(ADB.Entity entity, Base sourceObject, ADB.Transaction tr)
-  {
-    if (
-      sourceObject["properties"] is not Dictionary<string, object?> properties
-      || !properties.TryGetValue("Property Sets", out var propertySetsObj)
-      || propertySetsObj is not Dictionary<string, object?> propertySets
-      || propertySets.Count == 0
-    )
-    {
-      return false;
-    }
-
-    try
-    {
-      foreach (var propertySet in propertySets)
-      {
-        string setName = propertySet.Key;
-        object? setDataObj = propertySet.Value;
-
-        if (setDataObj is not Dictionary<string, object?> setData)
-        {
-          _logger.LogWarning("Property set {SetName} has invalid data format", setName);
-          continue;
-        }
-
-        if (!TryBakePropertySet(entity, setName, setData, tr))
-        {
-          _logger.LogWarning("Failed to bake property set {SetName} onto entity", setName);
-        }
-      }
-
-      return true;
-    }
-    catch (Exception ex) when (!ex.IsFatal())
-    {
-      _logger.LogError(ex, "Failed to bake property sets onto entity {Handle}", entity.Handle);
-      return false;
-    }
-  }
-
-  private bool TryBakePropertySet(
-    ADB.Entity entity,
-    string setName,
-    Dictionary<string, object?> setData,
-    ADB.Transaction tr
-  )
-  {
-    try
-    {
-      if (!_propertySetDefinitionMap.TryGetValue(setName, out ADB.ObjectId propertySetDefId))
-      {
-        _logger.LogWarning("Property set definition {SetName} not found in definition map", setName);
-        return false;
-      }
-
-      if (propertySetDefId.IsNull)
-      {
-        return false;
-      }
-
-      if (ObjectHasPropertySet(entity, propertySetDefId))
-      {
-        throw new SpeckleException($"Property set '{setName}' already exists on entity.");
-      }
-
-      return AddPropertySetToEntity(entity, propertySetDefId, setData, tr);
-    }
-    catch (Exception ex) when (!ex.IsFatal())
-    {
-      _logger.LogWarning(ex, "Failed to process property set {SetName}", setName);
-      return false;
-    }
-  }
-
-  private ADB.ObjectId CreatePropertySetDefinition(
-    string setName,
-    Dictionary<string, object?> propertyDefinitions,
-    string namePrefix,
-    ADB.Transaction tr
-  )
-  {
-    var db = _settingsStore.Current.Document.Database;
-    using AAECPDB.DictionaryPropertySetDefinitions propSetDefs = new(db);
-
-    string prefixedName = $"{setName}-{namePrefix}";
-
-    AAECPDB.PropertySetDefinition propSetDef = new();
-    propSetDef.SetToStandard(db);
-    propSetDef.SubSetDatabaseDefaults(db);
-    //propSetDef.Description = "Property Set Definition added by Speckle"; // POC: should use the description that was published. can this back in if needed
-    propSetDef.AppliesToAll = true;
-
-    foreach (var propertyDefinition in propertyDefinitions)
-    {
-      string propertyName = propertyDefinition.Key;
-      object? propertyDefObj = propertyDefinition.Value;
-
-      if (propertyDefObj is not Dictionary<string, object?> propertyDefDict)
-      {
-        continue;
-      }
-
-      if (
-        !propertyDefDict.TryGetValue(PropertySetDefinitionHandler.PROP_DEF_TYPE_KEY, out var dataTypeStr)
-        || dataTypeStr is not string dataTypeString
-      )
-      {
-        _logger.LogError(
-          "Property set definition {SetName} is invalid: property {PropertyName} missing or invalid dataType",
-          setName,
-          propertyName
-        );
-        return ADB.ObjectId.Null;
-      }
-
-      if (!Enum.TryParse(dataTypeString, out AAEC.PropertyData.DataType dataType))
-      {
-        _logger.LogError(
-          "Property set definition {SetName} is invalid: unsupported data type {DataType} for property {PropertyName}",
-          setName,
-          dataTypeString,
-          propertyName
-        );
-        return ADB.ObjectId.Null;
-      }
-
-      AAECPDB.PropertyDefinition propDef = new() { DataType = dataType, Name = propertyName };
-
-      propDef.SetToStandard(db);
-      propDef.SubSetDatabaseDefaults(db);
-
-      if (
-        propertyDefDict.TryGetValue(PropertySetDefinitionHandler.PROP_DEF_DEFAULT_VALUE_KEY, out object? defaultValue)
-        && defaultValue != null
-      )
-      {
-        try
-        {
-          // Cast numeric types to avoid bad numeric value errors
-          var convertedValue = dataType switch
-          {
-            AAEC.PropertyData.DataType.Integer => (int)(long)defaultValue,
-            AAEC.PropertyData.DataType.AutoIncrement => (int)(long)defaultValue,
-            _ => defaultValue
-          };
-
-          propDef.DefaultData = convertedValue;
-        }
-        catch (Exception ex) when (!ex.IsFatal())
-        {
-          _logger.LogWarning(
-            ex,
-            "Failed to set default value for property {PropertyName}, continuing without default",
-            propertyName
-          );
-        }
-      }
-
-      propSetDef.Definitions.Add(propDef);
-    }
-
-    propSetDefs.AddNewRecord(prefixedName, propSetDef);
-    tr.AddNewlyCreatedDBObject(propSetDef, true);
-
-    return propSetDef.ObjectId;
-  }
-
-  private bool ObjectHasPropertySet(ADB.DBObject obj, ADB.ObjectId propertySetId)
-  {
-    try
-    {
-      ADB.ObjectId tempId = AAECPDB.PropertyDataServices.GetPropertySet(obj, propertySetId);
-      return !tempId.IsNull;
-    }
-    catch (Autodesk.AutoCAD.Runtime.Exception ex) when (!ex.IsFatal())
-    {
-      return false;
-    }
-  }
-
-  private bool AddPropertySetToEntity(
-    ADB.Entity entity,
-    ADB.ObjectId propertySetDefId,
-    Dictionary<string, object?> setData,
-    ADB.Transaction tr
-  )
-  {
-    try
-    {
-      if (!entity.IsWriteEnabled)
-      {
-        entity.UpgradeOpen();
-      }
-
-      AAECPDB.PropertyDataServices.AddPropertySet(entity, propertySetDefId);
-
-      return TrySetPropertyValues(entity, propertySetDefId, setData, tr);
-    }
-    catch (Exception ex) when (!ex.IsFatal())
-    {
-      _logger.LogWarning(ex, "Failed to add property set to entity");
-      return false;
-    }
-  }
-
-  private bool TrySetPropertyValues(
-    ADB.Entity entity,
-    ADB.ObjectId propertySetDefId,
-    Dictionary<string, object?> setData,
-    ADB.Transaction tr
-  )
-  {
-    try
-    {
-      ADB.ObjectId propertySetId = AAECPDB.PropertyDataServices.GetPropertySet(entity, propertySetDefId);
-      var propertySet = (AAECPDB.PropertySet)tr.GetObject(propertySetId, ADB.OpenMode.ForWrite);
-      var setDefinition = (AAECPDB.PropertySetDefinition)tr.GetObject(propertySetDefId, ADB.OpenMode.ForRead);
-
-      // Build a map of property names to definition IDs
-      Dictionary<string, int> propertyNameToId = new();
-      foreach (AAECPDB.PropertyDefinition propDef in setDefinition.Definitions)
-      {
-        propertyNameToId[propDef.Name] = propDef.Id;
-      }
-
-      foreach (var propertyEntry in setData)
-      {
-        string propertyName = propertyEntry.Key;
-        object? propertyDataObj = propertyEntry.Value;
-
-        if (propertyDataObj is not Dictionary<string, object?> propertyDataDict)
-        {
-          continue;
-        }
-
-        if (!propertyDataDict.TryGetValue("value", out var value) || value == null)
-        {
-          continue;
-        }
-
-        if (!propertyNameToId.TryGetValue(propertyName, out int propertyId))
-        {
-          continue;
-        }
-
-        _propertyHandler.TryGetValue(
-          () =>
-          {
-            propertySet.SetAt(propertyId, value);
-            return true;
-          },
-          out _
-        );
-      }
-
-      return true;
-    }
-    catch (Exception ex) when (!ex.IsFatal())
-    {
-      _logger.LogWarning(ex, "Failed to update property set values");
-      return false;
-    }
-  }
-}
@@ -1,60 +0,0 @@
-using Autodesk.AutoCAD.DatabaseServices;
-using Speckle.Connectors.Autocad.HostApp;
-using Speckle.Connectors.Autocad.Operations.Receive;
-using Speckle.Connectors.Civil3dShared.HostApp;
-using Speckle.Connectors.Common.Operations;
-using Speckle.Connectors.Common.Operations.Receive;
-using Speckle.Converters.Common;
-using Speckle.Sdk.Models;
-
-namespace Speckle.Connectors.Civil3dShared.Operations.Receive;
-
-/// <summary>
-/// <para>Civil3D specific host object builder with property set support. Expects to be a scoped dependency per receive operation.</para>
-/// </summary>
-public sealed class Civil3dHostObjectBuilder : AutocadHostObjectBaseBuilder
-{
-  private readonly PropertySetBaker _propertySetBaker;
-
-  public Civil3dHostObjectBuilder(
-    IRootToHostConverter converter,
-    AutocadLayerBaker layerBaker,
-    AutocadGroupBaker groupBaker,
-    AutocadInstanceBaker instanceBaker,
-    IAutocadMaterialBaker materialBaker,
-    IAutocadColorBaker colorBaker,
-    AutocadContext autocadContext,
-    RootObjectUnpacker rootObjectUnpacker,
-    IReceiveConversionHandler conversionHandler,
-    PropertySetBaker propertySetBaker
-  )
-    : base(
-      converter,
-      layerBaker,
-      groupBaker,
-      instanceBaker,
-      materialBaker,
-      colorBaker,
-      autocadContext,
-      rootObjectUnpacker,
-      conversionHandler
-    )
-  {
-    _propertySetBaker = propertySetBaker;
-  }
-
-  protected override void PreReceiveAdditionalDeepClean(string baseLayerPrefix)
-  {
-    _propertySetBaker.PurgePropertySets(baseLayerPrefix);
-  }
-
-  protected override void ParseAndBakeAdditionalProxies(Base rootObject, string baseLayerPrefix)
-  {
-    _propertySetBaker.ParseAndBakePropertySetDefinitions(rootObject, baseLayerPrefix);
-  }
-
-  protected override void PostBakeEntity(Entity entity, Base originalObject, Transaction tr)
-  {
-    _propertySetBaker.TryBakePropertySets(entity, originalObject, tr);
-  }
-}
@@ -11,15 +11,11 @@
  <ItemGroup>
    <Compile Include="$(MSBuildThisFileDirectory)Bindings\Civil3dReceiveBinding.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)DependencyInjection\Civil3dConnectorModule.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\PropertySetBaker.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Operations\Receive\Civil3dHostObjectBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Civil3dRootObjectBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Bindings\Civil3dSendBinding.cs" />
  </ItemGroup>
  <ItemGroup>
    <Folder Include="$(MSBuildThisFileDirectory)DependencyInjection\" />
-    <Folder Include="$(MSBuildThisFileDirectory)HostApp\" />
-    <Folder Include="$(MSBuildThisFileDirectory)Operations\Receive\" />
    <Folder Include="$(MSBuildThisFileDirectory)Operations\Send\" />
  </ItemGroup>
 </Project>
@@ -20,8 +20,23 @@ public class CsiFrameSectionPropertyExtractor : IFrameSectionPropertyExtractor
    _settingsStore = settingsStore;
  }

-  public void ExtractProperties(string sectionName, Dictionary<string, object?> properties) =>
+  public void ExtractProperties(string sectionName, Dictionary<string, object?> properties)
+  {
+    GetMaterialName(sectionName, properties);
    GetSectionProperties(sectionName, properties);
+    GetPropertyModifiers(sectionName, properties);
+  }
+
+  private void GetMaterialName(string sectionName, Dictionary<string, object?> properties)
+  {
+    // get material name
+    string materialName = string.Empty;
+    _settingsStore.Current.SapModel.PropFrame.GetMaterial(sectionName, ref materialName);
+
+    // append to General Data of properties dictionary
+    Dictionary<string, object?> generalData = properties.EnsureNested(SectionPropertyCategory.GENERAL_DATA);
+    generalData["Material"] = materialName;
+  }

  private void GetSectionProperties(string sectionName, Dictionary<string, object?> properties)
  {
@@ -54,20 +69,47 @@ public class CsiFrameSectionPropertyExtractor : IFrameSectionPropertyExtractor
      ref radiusOfGyrationAboutMinorAxis
    );

+    string distanceUnit = _settingsStore.Current.SpeckleUnits;
+    string areaUnit = $"{distanceUnit}²"; // // TODO: Formalize this better
+    string modulusUnit = $"{distanceUnit}³"; // // TODO: Formalize this better
+    string inertiaUnit = $"{distanceUnit}\u2074"; // TODO: Formalize this better
+
    Dictionary<string, object?> mechanicalProperties = properties.EnsureNested(
      SectionPropertyCategory.SECTION_PROPERTIES
    );
-    mechanicalProperties.Add("Area", crossSectionalArea);
-    mechanicalProperties.Add("As2", shearAreaInMajorAxisDirection);
-    mechanicalProperties.Add("As3", shearAreaInMinorAxisDirection);
-    mechanicalProperties.Add("J", torsionalConstant);
-    mechanicalProperties.Add("I22", momentOfInertiaAboutMajorAxis);
-    mechanicalProperties.Add("I33", momentOfInertiaAboutMinorAxis);
-    mechanicalProperties.Add("S22", sectionModulusAboutMajorAxis);
-    mechanicalProperties.Add("S33", sectionModulusAboutMinorAxis);
-    mechanicalProperties.Add("Z22", plasticModulusAboutMajorAxis);
-    mechanicalProperties.Add("Z33", plasticModulusAboutMinorAxis);
-    mechanicalProperties.Add("R22", radiusOfGyrationAboutMajorAxis);
-    mechanicalProperties.Add("R33", radiusOfGyrationAboutMinorAxis);
+    mechanicalProperties.AddWithUnits("Area", crossSectionalArea, areaUnit);
+    mechanicalProperties.AddWithUnits("As2", shearAreaInMajorAxisDirection, areaUnit);
+    mechanicalProperties.AddWithUnits("As3", shearAreaInMinorAxisDirection, areaUnit);
+    mechanicalProperties.AddWithUnits("J", torsionalConstant, inertiaUnit);
+    mechanicalProperties.AddWithUnits("I22", momentOfInertiaAboutMajorAxis, inertiaUnit);
+    mechanicalProperties.AddWithUnits("I33", momentOfInertiaAboutMinorAxis, inertiaUnit);
+    mechanicalProperties.AddWithUnits("S22", sectionModulusAboutMajorAxis, modulusUnit);
+    mechanicalProperties.AddWithUnits("S33", sectionModulusAboutMinorAxis, modulusUnit);
+    mechanicalProperties.AddWithUnits("Z22", plasticModulusAboutMajorAxis, modulusUnit);
+    mechanicalProperties.AddWithUnits("Z33", plasticModulusAboutMinorAxis, modulusUnit);
+    mechanicalProperties.AddWithUnits("R22", radiusOfGyrationAboutMajorAxis, distanceUnit);
+    mechanicalProperties.AddWithUnits("R33", radiusOfGyrationAboutMinorAxis, distanceUnit);
+  }
+
+  private void GetPropertyModifiers(string sectionName, Dictionary<string, object?> properties)
+  {
+    double[] stiffnessModifiersArray = [];
+    _settingsStore.Current.SapModel.PropFrame.GetModifiers(sectionName, ref stiffnessModifiersArray);
+
+    Dictionary<string, object?> modifiers =
+      new()
+      {
+        ["Cross-section (Axial) Area"] = stiffnessModifiersArray[0],
+        ["Shear Area in 2 Direction"] = stiffnessModifiersArray[1],
+        ["Shear Area in 3 Direction"] = stiffnessModifiersArray[2],
+        ["Torsional Constant"] = stiffnessModifiersArray[3],
+        ["Moment of Inertia about 2 Axis"] = stiffnessModifiersArray[4],
+        ["Moment of Inertia about 3 Axis"] = stiffnessModifiersArray[5],
+        ["Mass"] = stiffnessModifiersArray[6],
+        ["Weight"] = stiffnessModifiersArray[7],
+      };
+
+    Dictionary<string, object?> generalData = properties.EnsureNested(SectionPropertyCategory.GENERAL_DATA);
+    generalData["Modifiers"] = modifiers;
  }
 }
@@ -11,7 +11,7 @@ namespace Speckle.Connectors.CSiShared.HostApp.Helpers;
 /// Currently, all material property extraction can happen on a CsiShared level which simplifies things a lot.
 /// Properties depend on the directional symmetry of the material, hence the switch statements.
 /// </remarks>
-public class CsiMaterialPropertyExtractor : IMaterialPropertyExtractor
+public class CsiMaterialPropertyExtractor
 {
  /// <summary>
  /// Property strings for all mechanical properties, used by numerous methods.
@@ -35,11 +35,11 @@ public class CsiMaterialPropertyExtractor : IMaterialPropertyExtractor
    _settingsStore = settingsStore;
  }

-  public void ExtractProperties(string name, Dictionary<string, object?> properties)
+  public void ExtractProperties(string materialName, Dictionary<string, object?> properties)
  {
-    GetGeneralProperties(name, properties);
-    GetWeightAndMassProperties(name, properties);
-    GetMechanicalProperties(name, properties);
+    GetGeneralProperties(materialName, properties);
+    GetWeightAndMassProperties(materialName, properties); // TODO: Add units
+    GetMechanicalProperties(materialName, properties); // TODO: Add units
  }

  private void GetGeneralProperties(string materialName, Dictionary<string, object?> properties)
@@ -76,7 +76,7 @@ public class CsiMaterialPropertyExtractor : IMaterialPropertyExtractor
      ref massPerUnitVolume
    );

-    var weightAndMass = properties.EnsureNested(SectionPropertyCategory.WEIGHT_AND_MASS);
+    var weightAndMass = properties.EnsureNested("Weight and Mass");
    weightAndMass["Weight per Unit Volume"] = weightPerUnitVolume;
    weightAndMass["Mass per Unit Volume"] = massPerUnitVolume;
  }
@@ -101,7 +101,7 @@ public class CsiMaterialPropertyExtractor : IMaterialPropertyExtractor
      _ => throw new ArgumentException($"Unknown symmetry type: {materialDirectionalSymmetryKey}")
    };

-    var mechanicalProperties = properties.EnsureNested(SectionPropertyCategory.MECHANICAL_DATA);
+    var mechanicalProperties = properties.EnsureNested("Mechanical Properties");
    mechanicalProperties["Directional Symmetry Type"] = materialDirectionalSymmetryValue.ToString();

    GetMechanicalPropertiesByType(materialName, materialDirectionalSymmetryValue, mechanicalProperties);
@@ -23,7 +23,6 @@ public class CsiResultsExtractorFactory
      ResultsKey.PIER_FORCES => _serviceProvider.GetRequiredService<CsiPierForceResultsExtractor>(),
      ResultsKey.SPANDREL_FORCES => _serviceProvider.GetRequiredService<CsiSpandrelForceResultsExtractor>(),
      ResultsKey.STORY_DRIFTS => _serviceProvider.GetRequiredService<CsiStoryDriftsResultsExtractor>(),
-      ResultsKey.STORY_FORCES => _serviceProvider.GetRequiredService<CsiStoryForceResultsExtractor>(),
      _ => throw new InvalidOperationException($"{resultsKey} not accounted for in CsiResultsExtractorFactory")
    };
 }
@@ -1,13 +0,0 @@
-namespace Speckle.Connectors.CSiShared.HostApp.Helpers;
-
-/// <summary>
-/// Contract for host application specific material property extraction.
-/// </summary>
-/// <remarks>
-/// Mirrors property extraction system pattern by composing with base extractor.
-/// Enables both shared and application-specific property extraction in one call.
-/// </remarks>
-public interface IApplicationMaterialPropertyExtractor
-{
-  void ExtractProperties(string name, Dictionary<string, object?> properties);
-}
@@ -1,9 +0,0 @@
-namespace Speckle.Connectors.CSiShared.HostApp.Helpers;
-
-/// <summary>
-/// Core contract for material property extraction common across CSi products.
-/// </summary>
-public interface IMaterialPropertyExtractor
-{
-  void ExtractProperties(string name, Dictionary<string, object?> properties);
-}
@@ -1,10 +0,0 @@
-using Speckle.Sdk.Models.Proxies;
-
-namespace Speckle.Connectors.CSiShared.HostApp.Helpers;
-
-// NOTE: Interface because Etabs and Sap2000 material unpacking and extraction is different.
-// At ServiceRegistration, we inject the correct implementation of the IMaterialUnpacker
-public interface IMaterialUnpacker
-{
-  IEnumerable<IProxyCollection> UnpackMaterials();
-}
@@ -0,0 +1,51 @@
+using Speckle.Connectors.CSiShared.HostApp.Helpers;
+using Speckle.Converters.CSiShared.ToSpeckle.Helpers;
+using Speckle.Sdk.Models.Proxies;
+
+namespace Speckle.Connectors.CSiShared.HostApp;
+
+/// <summary>
+/// Creates material proxies based on stored entries from the materials cache
+/// </summary>
+public class MaterialUnpacker
+{
+  private readonly CsiMaterialPropertyExtractor _propertyExtractor;
+  private readonly CsiToSpeckleCacheSingleton _csiToSpeckleCacheSingleton;
+
+  public MaterialUnpacker(
+    CsiMaterialPropertyExtractor propertyExtractor,
+    CsiToSpeckleCacheSingleton csiToSpeckleCacheSingleton
+  )
+  {
+    _propertyExtractor = propertyExtractor;
+    _csiToSpeckleCacheSingleton = csiToSpeckleCacheSingleton;
+  }
+
+  // Creates a list of material proxies from the csi materials cache
+  public IEnumerable<IProxyCollection> UnpackMaterials()
+  {
+    foreach (var kvp in _csiToSpeckleCacheSingleton.MaterialCache)
+    {
+      // get the cached entry
+      string materialName = kvp.Key;
+      List<string> sectionIds = kvp.Value;
+
+      // get the properties of the material
+      Dictionary<string, object?> properties = new(); // create empty dictionary
+      _propertyExtractor.ExtractProperties(materialName, properties); // dictionary mutated with respective properties
+
+      // create the material proxy
+      GroupProxy materialProxy =
+        new()
+        {
+          id = materialName,
+          name = materialName,
+          applicationId = materialName,
+          objects = sectionIds,
+          ["properties"] = properties
+        };
+
+      yield return materialProxy;
+    }
+  }
+}
@@ -34,7 +34,7 @@ public class CsiRootObjectBuilder : IRootObjectBuilder<ICsiWrapper>
  private readonly IRootToSpeckleConverter _rootToSpeckleConverter;
  private readonly IConverterSettingsStore<CsiConversionSettings> _converterSettings;
  private readonly CsiSendCollectionManager _sendCollectionManager;
-  private readonly IMaterialUnpacker _materialUnpacker;
+  private readonly MaterialUnpacker _materialUnpacker;
  private readonly ISectionUnpacker _sectionUnpacker;
  private readonly ILogger<CsiRootObjectBuilder> _logger;
  private readonly ISdkActivityFactory _activityFactory;
@@ -45,7 +45,7 @@ public class CsiRootObjectBuilder : IRootObjectBuilder<ICsiWrapper>
    IRootToSpeckleConverter rootToSpeckleConverter,
    IConverterSettingsStore<CsiConversionSettings> converterSettings,
    CsiSendCollectionManager sendCollectionManager,
-    IMaterialUnpacker materialUnpacker,
+    MaterialUnpacker materialUnpacker,
    ISectionUnpacker sectionUnpacker,
    ILogger<CsiRootObjectBuilder> logger,
    ISdkActivityFactory activityFactory,
@@ -83,16 +83,8 @@ public class CsiRootObjectBuilder : IRootObjectBuilder<ICsiWrapper>
    using var activity = _activityFactory.Start("Build");

    string modelFileName = _csiApplicationService.SapModel.GetModelFilename(false) ?? "Unnamed model";
-    (string forceUnit, string tempUnit) = GetForceAndTemperatureUnits();
-
    Collection rootObjectCollection =
-      new()
-      {
-        name = modelFileName,
-        ["units"] = _converterSettings.Current.SpeckleUnits,
-        ["forceUnits"] = forceUnit,
-        ["temperatureUnits"] = tempUnit
-      };
+      new() { name = modelFileName, ["units"] = _converterSettings.Current.SpeckleUnits };

    List<SendConversionResult> results = new(csiObjects.Count);
    int count = 0;
@@ -153,7 +145,7 @@ public class CsiRootObjectBuilder : IRootObjectBuilder<ICsiWrapper>
          requestedResultTypes,
          objectSelectionSummary
        );
-        rootObjectCollection[RootKeys.ANALYSIS_RESULTS] = analysisResults;
+        rootObjectCollection["analysisResults"] = analysisResults;
      }
      catch (Exception ex)
      {
@@ -225,20 +217,4 @@ public class CsiRootObjectBuilder : IRootObjectBuilder<ICsiWrapper>
        group => group.Key, // ModelObjectType (FRAME, JOINT, etc.)
        group => group.Select(obj => obj.Name).ToList() // Extract Name from each ICsiWrapper and convert to List<string>
      );
-
-  /// <summary>
-  /// Instantiates a Base object and pre-populates it with the models defined force units.
-  /// </summary>
-  /// <returns></returns>
-  /// <exception cref="SpeckleException"></exception>
-  private (string, string) GetForceAndTemperatureUnits()
-  {
-    var forceUnit = eForce.NotApplicable;
-    var lengthUnit = eLength.NotApplicable;
-    var temperatureUnit = eTemperature.NotApplicable;
-
-    _converterSettings.Current.SapModel.GetDatabaseUnits_2(ref forceUnit, ref lengthUnit, ref temperatureUnit);
-
-    return (forceUnit.ToString(), temperatureUnit.ToString());
-  }
 }
@@ -47,7 +47,7 @@ public static class ServiceRegistration

    services.AddScoped<CsiMaterialPropertyExtractor>();
    services.AddScoped<CsiResultsExtractorFactory>();
-    services.AddScoped<IMaterialPropertyExtractor, CsiMaterialPropertyExtractor>();
+    services.AddScoped<MaterialUnpacker>();
    services.AddScoped<IFrameSectionPropertyExtractor, CsiFrameSectionPropertyExtractor>();
    services.AddScoped<IShellSectionPropertyExtractor, CsiShellSectionPropertyExtractor>();
    services.AddScoped<AnalysisResultsExtractor>();
@@ -19,9 +19,7 @@
    <Compile Include="$(MSBuildThisFileDirectory)Bindings\CsiSharedSendBinding.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Filters\CsiSharedSelectionFilter.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\CsiResultsExtractorFactory.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\IApplicationMaterialPropertyExtractor.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\IMaterialPropertyExtractor.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\IMaterialUnpacker.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)HostApp\MaterialUnpacker.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\CsiSendCollectionManager.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\CsiFrameSectionPropertyExtractor.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\CsiMaterialPropertyExtractor.cs" />
@@ -31,8 +31,8 @@ public class AnalysisResultsExtractor
    Dictionary<ModelObjectType, List<string>> objectSelectionSummary
  )
  {
-    // Step 1: create base object that will hold analysis results
-    var analysisResults = new Base();
+    // Step 1: get analysis units
+    var analysisResults = CreateAnalysisResultsWithUnits();

    // Step 2: configure and validate load cases
    ConfigureAndValidateSelectedLoadCases(selectedCasesAndCombinations);
@@ -43,6 +43,36 @@ public class AnalysisResultsExtractor
    return analysisResults;
  }

+  /// <summary>
+  /// Instantiates a Base object and pre-populates it with the models defined force units.
+  /// </summary>
+  /// <returns></returns>
+  /// <exception cref="SpeckleException"></exception>
+  private Base CreateAnalysisResultsWithUnits()
+  {
+    var forceUnit = eForce.NotApplicable;
+    var lengthUnit = eLength.NotApplicable;
+    var temperatureUnit = eTemperature.NotApplicable;
+
+    int success = _converterSettingsStore.Current.SapModel.GetDatabaseUnits_2(
+      ref forceUnit,
+      ref lengthUnit,
+      ref temperatureUnit
+    );
+
+    if (success != 0)
+    {
+      throw new SpeckleException("Failed to retrieve units for analysis results");
+    }
+
+    return new Base
+    {
+      ["forceUnit"] = forceUnit.ToString(),
+      ["lengthUnit"] = lengthUnit.ToString(),
+      ["temperatureUnit"] = temperatureUnit.ToString()
+    };
+  }
+
  private void ExtractResults(
    List<string> requestedResultTypes,
    Dictionary<ModelObjectType, List<string>> objectSelectionSummary,
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -305,7 +285,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.etabs21": {
@@ -355,12 +335,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -155,25 +155,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -229,8 +210,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -254,7 +236,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.etabs22": {
@@ -304,12 +286,33 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -1,50 +0,0 @@
-using Speckle.Connectors.CSiShared.HostApp.Helpers;
-using Speckle.Converters.CSiShared.ToSpeckle.Helpers;
-using Speckle.Sdk.Models.Proxies;
-
-namespace Speckle.Connectors.ETABSShared.HostApp;
-
-public class EtabsMaterialUnpacker : IMaterialUnpacker
-{
-  private readonly CsiToSpeckleCacheSingleton _csiToSpeckleCacheSingleton;
-  private readonly IMaterialPropertyExtractor _csiMaterialPropertyExtractor;
-  private readonly IApplicationMaterialPropertyExtractor _etabsMaterialPropertyExtractor;
-
-  public EtabsMaterialUnpacker(
-    CsiToSpeckleCacheSingleton csiToSpeckleCacheSingleton,
-    IMaterialPropertyExtractor csiMaterialPropertyExtractor,
-    IApplicationMaterialPropertyExtractor etabsMaterialPropertyExtractor
-  )
-  {
-    _csiToSpeckleCacheSingleton = csiToSpeckleCacheSingleton;
-    _csiMaterialPropertyExtractor = csiMaterialPropertyExtractor;
-    _etabsMaterialPropertyExtractor = etabsMaterialPropertyExtractor;
-  }
-
-  public IEnumerable<IProxyCollection> UnpackMaterials()
-  {
-    foreach (var kvp in _csiToSpeckleCacheSingleton.MaterialCache)
-    {
-      string name = kvp.Key;
-      var sectionIds = kvp.Value;
-
-      // get the properties of the material
-      Dictionary<string, object?> properties = [];
-      _csiMaterialPropertyExtractor.ExtractProperties(name, properties);
-      _etabsMaterialPropertyExtractor.ExtractProperties(name, properties);
-
-      // create the material proxy
-      GroupProxy materialProxy =
-        new()
-        {
-          id = name,
-          name = name,
-          applicationId = name,
-          objects = sectionIds,
-          ["properties"] = properties
-        };
-
-      yield return materialProxy;
-    }
-  }
-}
@@ -47,17 +47,18 @@ public class EtabsSectionUnpacker : ISectionUnpacker
      string sectionName = entry.Key;
      List<string> frameIds = entry.Value;

-      // initialize properties
-      Dictionary<string, object?> properties = [];
+      // Initialize properties outside the if statement
+      Dictionary<string, object?> properties = new Dictionary<string, object?>();

-      // Extract properties if valid section name
-      // "None" is weird but api returns that string if an opening, null element etc.
-      if (sectionName != "None" && !string.IsNullOrEmpty(sectionName))
+      // get the properties of the section
+      // openings will have objects assigned to them, but won't have properties
+      // sectionName is initialized with string.Empty, but api ref returns string "None"
+      if (sectionName != "None")
      {
        properties = _propertyExtractor.ExtractFrameSectionProperties(sectionName);
      }

-      // create section proxy
+      // create the section proxy
      GroupProxy sectionProxy =
        new()
        {
@@ -65,8 +66,8 @@ public class EtabsSectionUnpacker : ISectionUnpacker
          name = sectionName,
          applicationId = sectionName,
          objects = frameIds,
-          ["type"] = "Frame Section",
-          ["properties"] = properties
+          ["type"] = "Frame Section", // since sectionProxies are a flat list, need some way to distinguish from shell
+          ["properties"] = properties // openings will just have an empty dict here
        };

      yield return sectionProxy;
@@ -80,8 +81,8 @@ public class EtabsSectionUnpacker : ISectionUnpacker
      string sectionName = entry.Key;
      List<string> frameIds = entry.Value;

-      // initialize properties outside the if statement
-      Dictionary<string, object?> properties = [];
+      // Initialize properties outside the if statement
+      Dictionary<string, object?> properties = new Dictionary<string, object?>();

      // get the properties of the section
      // openings will have objects assigned to them, but won't have properties
@@ -91,7 +92,7 @@ public class EtabsSectionUnpacker : ISectionUnpacker
        properties = _propertyExtractor.ExtractShellSectionProperties(sectionName);
      }

-      // create section proxy
+      // create the section proxy
      GroupProxy sectionProxy =
        new()
        {
@@ -1,5 +1,4 @@
 using Speckle.Connectors.CSiShared.HostApp.Helpers;
-using Speckle.Connectors.ETABSShared.HostApp.Services;
 using Speckle.Converters.Common;
 using Speckle.Converters.CSiShared;
 using Speckle.Converters.CSiShared.Utils;
@@ -9,96 +8,69 @@ namespace Speckle.Connectors.ETABSShared.HostApp.Helpers;
 /// <summary>
 /// Extracts ETABS-specific frame section properties.
 /// </summary>
-/// <remarks>
-/// The bulk loading strategy is necessary here because we can't know which database table contains which section
-/// beforehand - there are multiple tables like "Frame Section Property Definitions - Steel",
-/// "Frame Section Property Definitions - Concrete", etc.
-/// </remarks>
 public class EtabsFrameSectionPropertyExtractor : IApplicationFrameSectionPropertyExtractor
 {
  private readonly IConverterSettingsStore<CsiConversionSettings> _settingsStore;
-  private readonly EtabsSectionPropertyDefinitionService _definitionService;

-  public EtabsFrameSectionPropertyExtractor(
-    IConverterSettingsStore<CsiConversionSettings> settingsStore,
-    EtabsSectionPropertyDefinitionService definitionService
-  )
+  public EtabsFrameSectionPropertyExtractor(IConverterSettingsStore<CsiConversionSettings> settingsStore)
  {
    _settingsStore = settingsStore;
-    _definitionService = definitionService;
  }

  /// <summary>
-  /// Gets frame section properties from preloaded database table data
+  /// Gets generalised frame section properties
  /// </summary>
  /// <remarks>
-  /// Property categorization is done heuristically - order matters in the parsing logic.
+  /// Sap2000 doesn't support this method, unfortunately
+  /// Alternative is to account for extraction according to section type - we're talking over 40 section types!
+  /// This way, we get basic information with minimal computational costs.
  /// </remarks>
  public void ExtractProperties(string sectionName, Dictionary<string, object?> properties)
  {
-    // get frame definitions from the service (which uses database table extraction)
-    // this is a fast dictionary lookup since all data is preloaded
-    if (!_definitionService.FrameDefinitions.TryGetValue(sectionName, out var rawDatabaseTableProperties))
+    // Get all frame properties
+    int numberOfNames = 0;
+    string[] names = [];
+    eFramePropType[] propTypes = [];
+    double[] t3 = [],
+      t2 = [],
+      tf = [],
+      tw = [],
+      t2b = [],
+      tfb = [],
+      area = [];
+
+    _settingsStore.Current.SapModel.PropFrame.GetAllFrameProperties_2(
+      ref numberOfNames,
+      ref names,
+      ref propTypes,
+      ref t3,
+      ref t2,
+      ref tf,
+      ref tw,
+      ref t2b,
+      ref tfb,
+      ref area
+    );
+
+    // Find the index of the current section
+    int sectionIndex = Array.IndexOf(names, sectionName);
+
+    if (sectionIndex != -1)
    {
-      return; // no definitions found for this section
-    }
+      // General Data
+      var generalData = properties.EnsureNested(SectionPropertyCategory.GENERAL_DATA);
+      generalData["Section Shape"] = propTypes[sectionIndex].ToString();

-    // define table keys that we don't want to include in the section proxy properties
-    var keysToExclude = new HashSet<string>
-    {
-      "GUID",
-      "Name",
-      "Color",
-      "Notes",
-      "FileName",
-      "FromFile",
-      "SectInFile",
-      "NotAutoFact"
-    };
-
-    // get the section type / shape using the dedicated api query (exception to the database approach)
-    // this specific property isn't available in the database table extraction
-    eFramePropType framePropType = 0;
-    _settingsStore.Current.SapModel.PropFrame.GetTypeOAPI(sectionName, ref framePropType);
-    Dictionary<string, object?> generalProperties = properties.EnsureNested(SectionPropertyCategory.GENERAL_DATA);
-    generalProperties.Add("Section Shape", framePropType.ToString());
-
-    // heuristic property categorization based on key patterns and parse-ability
-    // NOTE: this is gross and quite dangerous 🤨 but beats specific frame prop sect. property extractions imo
-    // order matters here! we check for known string props first, then modifiers, then assume doubles are dimensions
-    foreach (KeyValuePair<string, string> rawDatabaseTableProperty in rawDatabaseTableProperties)
-    {
-      string key = rawDatabaseTableProperty.Key;
-      string value = rawDatabaseTableProperty.Value;
-
-      // skip metadata fields we don't care about
-      if (!keysToExclude.Contains(key))
-      {
-        // material is always a string, grab it first
-        if (key == "Material")
-        {
-          generalProperties.Add(key, value);
-        }
-        // modifier properties end with "Mod" and should be numeric
-        else if (key.EndsWith("Mod") && double.TryParse(value, out double parsedModValue))
-        {
-          Dictionary<string, object?> modificationProperties = properties.EnsureNested(
-            SectionPropertyCategory.MODIFIERS
-          );
-          modificationProperties.Add(key, parsedModValue);
-        }
-        // anything else that parses as a double is assumed to be a section dimension
-        // this covers things like t3, t2, tf, tw, area, etc. without having to enumerate them all
-        else if (double.TryParse(value, out double parsedDimensionValue))
-        {
-          Dictionary<string, object?> sectionDimensions = properties.EnsureNested(
-            SectionPropertyCategory.SECTION_DIMENSIONS
-          );
-          sectionDimensions.Add(key, parsedDimensionValue);
-        }
-        // if it doesn't parse as double and isn't a known string property, we skip it
-        // this is acceptable - we'd rather miss some edge case properties than crash
-      }
+      // Section Dimensions
+      string unit = _settingsStore.Current.SpeckleUnits;
+      var sectionDimensions = properties.EnsureNested(SectionPropertyCategory.SECTION_DIMENSIONS);
+      sectionDimensions.AddWithUnits("t3", t3[sectionIndex], unit);
+      sectionDimensions.AddWithUnits("t2", t2[sectionIndex], unit);
+      sectionDimensions.AddWithUnits("tf", tf[sectionIndex], unit);
+      sectionDimensions.AddWithUnits("tw", tw[sectionIndex], unit);
+      sectionDimensions.AddWithUnits("t2b", t2b[sectionIndex], unit);
+      sectionDimensions.AddWithUnits("tfb", tfb[sectionIndex], unit);
+      sectionDimensions.AddWithUnits("Area", area[sectionIndex], $"{unit}²");
    }
  }
 }
@@ -1,219 +0,0 @@
-using Speckle.Connectors.CSiShared.HostApp.Helpers;
-using Speckle.Converters.Common;
-using Speckle.Converters.CSiShared;
-using Speckle.Converters.CSiShared.Utils;
-
-namespace Speckle.Connectors.ETABS22.HostApp.Helpers;
-
-public class EtabsMaterialPropertyExtractor : IApplicationMaterialPropertyExtractor
-{
-  private readonly IConverterSettingsStore<CsiConversionSettings> _settingsStore;
-
-  private readonly Dictionary<int, string?> _ssTypeDict =
-    new()
-    {
-      { 0, "User defined" },
-      { 1, "Parametric - Simple" },
-      { 2, "Parametric - Mander" }
-    };
-
-  private readonly Dictionary<int, string?> _ssHysTypeDict =
-    new()
-    {
-      { 0, "Elastic" },
-      { 1, "Kinematic" },
-      { 2, "Takeda" },
-      { 3, "Pivot" },
-      { 4, "Concrete" },
-      { 5, "BRB Hardening" },
-      { 6, "Degrading" },
-      { 7, "Isotropic" }
-    };
-
-  private const int TEMP = 0;
-
-  public EtabsMaterialPropertyExtractor(IConverterSettingsStore<CsiConversionSettings> settingsStore)
-  {
-    _settingsStore = settingsStore;
-  }
-
-  public void ExtractProperties(string name, Dictionary<string, object?> properties)
-  {
-    // we want to get some of the "other" material property data that is type specific
-    // csi extractor populates "type" string, but api query arguably simpler and more reliable than dict string access
-    int symType = 0;
-    eMatType matType = 0;
-    _settingsStore.Current.SapModel.PropMaterial.GetTypeOAPI(name, ref matType, ref symType);
-
-    // we don't have design data api queries for these, so early return to avoid creating that specific dictionary
-    if (matType is eMatType.NoDesign or eMatType.Aluminum or eMatType.ColdFormed or eMatType.Masonry)
-    {
-      return;
-    }
-
-    // ensure design data specific properties dictionary that will be mutated in switch expression
-    var designData = properties.EnsureNested(SectionPropertyCategory.DESIGN_DATA);
-
-    // can't do a switch expression here because not all enums have an api query (e.g. masonry, aluminium)
-    switch (matType)
-    {
-      case eMatType.Steel:
-        ExtractSteelProperties(name, designData);
-        break;
-      case eMatType.Concrete:
-        ExtractConcreteProperties(name, designData);
-        break;
-      case eMatType.Rebar:
-        ExtractRebarProperties(name, designData);
-        break;
-      case eMatType.Tendon:
-        ExtractTendonProperties(name, designData);
-        break;
-    }
-  }
-
-  private void ExtractSteelProperties(string name, Dictionary<string, object?> designData)
-  {
-    // step 1: stubs for api query
-    int ssType = 0,
-      ssHysType = 0;
-    double fy = 0,
-      fu = 0,
-      eFy = 0,
-      eFu = 0,
-      strainAtHardening = 0,
-      strainAtMaxStress = 0,
-      strainAtRupture = 0;
-
-    // step 2: api query
-    // NOTE: using the "older" method. Not sure if _1 is unsupported in etabs 21
-    // also, _1 doesn't give a lot more MEANINGFUL data
-    _settingsStore.Current.SapModel.PropMaterial.GetOSteel(
-      name,
-      ref fy,
-      ref fu,
-      ref eFy,
-      ref eFu,
-      ref ssType,
-      ref ssHysType,
-      ref strainAtHardening,
-      ref strainAtMaxStress,
-      ref strainAtRupture
-    );
-
-    // step 3: mutate properties dictionary
-    designData["Fy"] = fy;
-    designData["Fu"] = fu;
-    designData["EFy"] = eFy;
-    designData["EFu"] = eFu;
-    designData["SSType"] = _ssTypeDict.TryGetValue(ssType, out string? ssTypeValue) ? ssTypeValue : "";
-    designData["SSHysType"] = _ssHysTypeDict.TryGetValue(ssHysType, out string? ssHysTypeValue) ? ssHysTypeValue : "";
-    designData["StrainAtHardening"] = strainAtHardening;
-    designData["StrainAtMaxStress"] = strainAtMaxStress;
-    designData["StrainAtRupture"] = strainAtRupture;
-    designData["Temp"] = TEMP;
-  }
-
-  private void ExtractConcreteProperties(string name, Dictionary<string, object?> designData)
-  {
-    // step 1: stubs for api query
-    int ssType = 0,
-      ssHysType = 0;
-    bool isLightweight = false;
-    double fc = 0,
-      fcsFactor = 0,
-      strainAtFc = 0,
-      strainUltimate = 0,
-      frictionAngle = 0,
-      dilatationalAngle = 0;
-
-    // step 2: api query
-    // NOTE: using the "older" method. Not sure if _1 or _2 are unsupported in etabs 21
-    // also, _1 or _2 doesn't give a lot more MEANINGFUL data
-    _settingsStore.Current.SapModel.PropMaterial.GetOConcrete(
-      name,
-      ref fc,
-      ref isLightweight,
-      ref fcsFactor,
-      ref ssType,
-      ref ssHysType,
-      ref strainAtFc,
-      ref strainUltimate,
-      ref frictionAngle,
-      ref dilatationalAngle
-    );
-
-    // step 3: mutate properties dictionary
-    designData["Fc"] = fc;
-    designData["FcsFactor"] = fcsFactor;
-    designData["StrainAtFc"] = strainAtFc;
-    designData["StrainUltimate"] = strainUltimate;
-    designData["FrictionAngle"] = frictionAngle;
-    designData["DilatationalAngle"] = dilatationalAngle;
-    designData["IsLightweight"] = isLightweight.ToString();
-    designData["SSType"] = _ssTypeDict.TryGetValue(ssType, out string? ssTypeValue) ? ssTypeValue : "";
-    designData["SSHysType"] = _ssHysTypeDict.TryGetValue(ssHysType, out string? ssHysTypeValue) ? ssHysTypeValue : "";
-    designData["Temp"] = TEMP;
-  }
-
-  private void ExtractRebarProperties(string name, Dictionary<string, object?> designData)
-  {
-    // step 1: stubs for api query
-    bool useCaltransSsDefaults = false;
-    int ssType = 0,
-      ssHysType = 0;
-    double fy = 0,
-      fu = 0,
-      eFy = 0,
-      eFu = 0,
-      strainAtHardening = 0,
-      strainUltimate = 0;
-
-    // step 2: api query
-    // NOTE: using the "older" method. Not sure if _1 is unsupported in etabs 21
-    // also, _1 doesn't give a lot more MEANINGFUL data
-    _settingsStore.Current.SapModel.PropMaterial.GetORebar(
-      name,
-      ref fy,
-      ref fu,
-      ref eFy,
-      ref eFu,
-      ref ssType,
-      ref ssHysType,
-      ref strainAtHardening,
-      ref strainUltimate,
-      ref useCaltransSsDefaults
-    );
-
-    // step 3: mutate properties dictionary
-    designData["Fy"] = fy;
-    designData["Fu"] = fu;
-    designData["EFy"] = eFy;
-    designData["EFu"] = eFu;
-    designData["StrainAtHardening"] = strainAtHardening;
-    designData["StrainUltimate"] = strainUltimate;
-    designData["SSType"] = _ssTypeDict.TryGetValue(ssType, out string? ssTypeValue) ? ssTypeValue : "";
-    designData["SSHysType"] = _ssHysTypeDict.TryGetValue(ssHysType, out string? ssHysTypeValue) ? ssHysTypeValue : "";
-    designData["UseCaltransSsDefaults"] = useCaltransSsDefaults.ToString();
-    designData["Temp"] = TEMP;
-  }
-
-  private void ExtractTendonProperties(string name, Dictionary<string, object?> designData)
-  {
-    // step 1: stubs for api query
-    int ssType = 0,
-      ssHysType = 0;
-    double fy = 0,
-      fu = 0;
-
-    // step 2: api query
-    _settingsStore.Current.SapModel.PropMaterial.GetOTendon(name, ref fy, ref fu, ref ssType, ref ssHysType);
-
-    // step 3: mutate properties dictionary
-    designData["Fy"] = fy;
-    designData["Fu"] = fu;
-    designData["SSType"] = _ssTypeDict.TryGetValue(ssType, out string? ssTypeValue) ? ssTypeValue : "";
-    designData["SSHysType"] = _ssHysTypeDict.TryGetValue(ssHysType, out string? ssHysTypeValue) ? ssHysTypeValue : "";
-    designData["Temp"] = TEMP;
-  }
-}
@@ -1,105 +0,0 @@
-using Speckle.Converters.Common;
-using Speckle.Converters.CSiShared;
-using Speckle.Converters.CSiShared.ToSpeckle.Helpers;
-
-namespace Speckle.Connectors.ETABSShared.HostApp.Services;
-
-/// <summary>
-/// Loads and caches section property definitions from database tables for both frame and shell sections.
-/// </summary>
-public class EtabsSectionPropertyDefinitionService
-{
-  private readonly IConverterSettingsStore<CsiConversionSettings> _settingsStore;
-  public IReadOnlyDictionary<string, IReadOnlyDictionary<string, string>> FrameDefinitions { get; }
-  public IReadOnlyDictionary<string, IReadOnlyDictionary<string, string>> ShellDefinitions { get; }
-
-  public EtabsSectionPropertyDefinitionService(
-    DatabaseTableExtractor databaseTableExtractor,
-    IConverterSettingsStore<CsiConversionSettings> settingsStore
-  )
-  {
-    _settingsStore = settingsStore;
-
-    var availableTableKeys = GetAvailableTableKeys();
-
-    FrameDefinitions = LoadFrameDefinitions(databaseTableExtractor, availableTableKeys);
-    ShellDefinitions = LoadShellDefinitions(databaseTableExtractor, availableTableKeys);
-  }
-
-  private static IReadOnlyDictionary<string, IReadOnlyDictionary<string, string>> LoadFrameDefinitions(
-    DatabaseTableExtractor databaseTableExtractor,
-    string[] availableTableKeys
-  )
-  {
-    var frameTableKeys = GetFrameSectionPropertyDefinitionTableKeys(availableTableKeys);
-    return LoadDefinitionsFromTables(databaseTableExtractor, frameTableKeys);
-  }
-
-  private static IReadOnlyDictionary<string, IReadOnlyDictionary<string, string>> LoadShellDefinitions(
-    DatabaseTableExtractor databaseTableExtractor,
-    string[] availableTableKeys
-  )
-  {
-    var shellTableKeys = GetShellSectionPropertyDefinitionTableKeys(availableTableKeys);
-    return LoadDefinitionsFromTables(databaseTableExtractor, shellTableKeys);
-  }
-
-  private static IReadOnlyDictionary<string, IReadOnlyDictionary<string, string>> LoadDefinitionsFromTables(
-    DatabaseTableExtractor databaseTableExtractor,
-    IEnumerable<string> tableKeys
-  )
-  {
-    var definitions = new Dictionary<string, IReadOnlyDictionary<string, string>>();
-
-    foreach (string tableKey in tableKeys)
-    {
-      var tableData = databaseTableExtractor.GetTableData(tableKey, "Name");
-      foreach (var row in tableData.Rows)
-      {
-        definitions[row.Key] = row.Value;
-      }
-    }
-
-    return definitions;
-  }
-
-  private static IEnumerable<string> GetFrameSectionPropertyDefinitionTableKeys(string[] availableTableKeys)
-  {
-    var keysToExclude = new HashSet<string>
-    {
-      "Frame Section Property Definitions - Summary",
-      "Frame Section Property Definitions - Concrete Beam Reinforcing",
-      "Frame Section Property Definitions - Concrete Column Reinforcing"
-    };
-
-    return availableTableKeys.Where(key =>
-      key.StartsWith("Frame Section Property Definitions") && !keysToExclude.Contains(key)
-    );
-  }
-
-  private static IEnumerable<string> GetShellSectionPropertyDefinitionTableKeys(string[] availableTableKeys)
-  {
-    var keysToExclude = new HashSet<string> { "Area Section Property Definitions - Summary" };
-
-    return availableTableKeys.Where(key =>
-      key.StartsWith("Area Section Property Definitions") && !keysToExclude.Contains(key)
-    );
-  }
-
-  private string[] GetAvailableTableKeys()
-  {
-    int numberTables = 0;
-    string[] tableKey = [],
-      tableName = [];
-    int[] importType = [];
-
-    _ = _settingsStore.Current.SapModel.DatabaseTables.GetAvailableTables(
-      ref numberTables,
-      ref tableKey,
-      ref tableName,
-      ref importType
-    );
-
-    return tableKey;
-  }
-}
@@ -34,7 +34,7 @@ public class EtabsSectionPropertyExtractor
  /// </summary>
  public Dictionary<string, object?> ExtractFrameSectionProperties(string sectionName)
  {
-    Dictionary<string, object?> properties = [];
+    Dictionary<string, object?> properties = new();
    _csiFrameExtractor.ExtractProperties(sectionName, properties);
    _etabsFrameExtractor.ExtractProperties(sectionName, properties);
    return properties;
@@ -45,7 +45,7 @@ public class EtabsSectionPropertyExtractor
  /// </summary>
  public Dictionary<string, object?> ExtractShellSectionProperties(string sectionName)
  {
-    Dictionary<string, object?> properties = [];
+    Dictionary<string, object?> properties = new();
    _csiShellExtractor.ExtractProperties(sectionName, properties);
    _etabsShellExtractor.ExtractProperties(sectionName, properties);
    return properties;
@@ -1,7 +1,8 @@
 using Microsoft.Extensions.Logging;
 using Speckle.Connectors.CSiShared.HostApp.Helpers;
-using Speckle.Converters.CSiShared.ToSpeckle.Helpers;
-using Speckle.Converters.ETABSShared.ToSpeckle.Helpers;
+using Speckle.Converters.Common;
+using Speckle.Converters.CSiShared;
+using Speckle.Converters.CSiShared.Utils;

 namespace Speckle.Connectors.ETABSShared.HostApp.Helpers;

@@ -10,55 +11,54 @@ namespace Speckle.Connectors.ETABSShared.HostApp.Helpers;
 /// </summary>
 public class EtabsShellSectionPropertyExtractor : IApplicationShellSectionPropertyExtractor
 {
+  private readonly IConverterSettingsStore<CsiConversionSettings> _settingsStore;
  private readonly ILogger<EtabsShellSectionPropertyExtractor> _logger;
-  private readonly CsiToSpeckleCacheSingleton _csiToSpeckleCacheSingleton;
  private readonly EtabsShellSectionResolver _etabsShellSectionResolver;

  public EtabsShellSectionPropertyExtractor(
+    IConverterSettingsStore<CsiConversionSettings> settingsStore,
    ILogger<EtabsShellSectionPropertyExtractor> logger,
-    EtabsShellSectionResolver etabsShellSectionResolver,
-    CsiToSpeckleCacheSingleton csiToSpeckleCacheSingleton
+    EtabsShellSectionResolver etabsShellSectionResolver
  )
  {
+    _settingsStore = settingsStore;
    _logger = logger;
    _etabsShellSectionResolver = etabsShellSectionResolver;
-    _csiToSpeckleCacheSingleton = csiToSpeckleCacheSingleton;
  }

  /// <summary>
-  /// Extract shell section properties from cache.
+  /// Extract shell section properties
  /// </summary>
  /// <remarks>
-  /// By the time this method is called during section unpacking, all sections should already be
-  /// resolved and cached by <see cref="EtabsShellPropertiesExtractor"/> during object conversion.
+  /// sectionName is unique across all types (Wall, Slab and Deck)
+  /// There is no general query such as PropArea.GetShell() - rather we have to be specific on the type, for example
+  /// PropArea.GetWall() or PropArea.GetDeck() BUT we can't get the building type given a SectionName.
+  /// Hence the introduction of ResolveSection.
  /// </remarks>
  public void ExtractProperties(string sectionName, Dictionary<string, object?> properties)
  {
-    var sectionProps = GetSectionProperties(sectionName);
+    // Step 01: Finding the appropriate api query for the unknown section type (wall, deck or slab)
+    Dictionary<string, object?> resolvedProperties = _etabsShellSectionResolver.ResolveSection(sectionName);

-    // shallow copy nested dictionaries into provided properties dict to mutate it (required by interface contract)
-    foreach (var kvp in sectionProps)
+    // Step 02: Mutate properties dictionary with resolved properties
+    foreach (var nestedDictionary in resolvedProperties)
    {
-      properties[kvp.Key] = kvp.Value;
+      if (nestedDictionary.Value is not Dictionary<string, object?> nestedValues)
+      {
+        _logger.LogWarning(
+          "Unexpected value type for key {Key} in section {SectionName}. Expected Dictionary<string, object?>, got {ActualType}",
+          nestedDictionary.Key,
+          sectionName,
+          nestedDictionary.Value?.GetType().Name ?? "null"
+        );
+        continue;
+      }
+
+      var nestedProperties = properties.EnsureNested(nestedDictionary.Key);
+      foreach (var kvp in nestedValues)
+      {
+        nestedProperties[kvp.Key] = kvp.Value;
+      }
    }
  }
-
-  private Dictionary<string, object?> GetSectionProperties(string sectionName)
-  {
-    // return cached properties directly
-    if (_csiToSpeckleCacheSingleton.ShellSectionPropertiesCache.TryGetValue(sectionName, out var cachedProperties))
-    {
-      return cachedProperties;
-    }
-
-    // fallback - shouldn't happen because cached populated on the fly as sections appear in the extractor
-    _logger.LogWarning(
-      "Section {SectionName} not in cache during unpacking - resolving via API (expensive)",
-      sectionName
-    );
-
-    var resolved = _etabsShellSectionResolver.ResolveSection(sectionName);
-    _csiToSpeckleCacheSingleton.ShellSectionPropertiesCache[sectionName] = resolved;
-    return resolved;
-  }
 }
@@ -2,7 +2,7 @@ using Speckle.Converters.Common;
 using Speckle.Converters.CSiShared;
 using Speckle.Converters.CSiShared.Utils;

-namespace Speckle.Converters.ETABSShared.ToSpeckle.Helpers;
+namespace Speckle.Connectors.ETABSShared.HostApp.Helpers;

 /// <summary>
 /// Attempts to resolve the section type and retrieve its properties by trying different section resolvers.
@@ -1,10 +1,8 @@
 using Microsoft.Extensions.DependencyInjection;
 using Speckle.Connectors.CSiShared.HostApp;
 using Speckle.Connectors.CSiShared.HostApp.Helpers;
-using Speckle.Connectors.ETABS22.HostApp.Helpers;
 using Speckle.Connectors.ETABSShared.HostApp;
 using Speckle.Connectors.ETABSShared.HostApp.Helpers;
-using Speckle.Connectors.ETABSShared.HostApp.Services;
 using Speckle.Converters.ETABSShared;

 namespace Speckle.Connectors.ETABSShared;
@@ -14,18 +12,12 @@ public static class ServiceRegistration
  public static IServiceCollection AddEtabs(this IServiceCollection services)
  {
    services.AddEtabsConverters();
-    services.AddScoped<CsiSendCollectionManager, EtabsSendCollectionManager>();
-
-    // material services
-    services.AddScoped<IMaterialUnpacker, EtabsMaterialUnpacker>();
-    services.AddScoped<IApplicationMaterialPropertyExtractor, EtabsMaterialPropertyExtractor>();
-
-    // section services
-    services.AddScoped<ISectionUnpacker, EtabsSectionUnpacker>();
    services.AddScoped<IApplicationFrameSectionPropertyExtractor, EtabsFrameSectionPropertyExtractor>();
    services.AddScoped<IApplicationShellSectionPropertyExtractor, EtabsShellSectionPropertyExtractor>();
-    services.AddScoped<EtabsSectionPropertyDefinitionService>();
    services.AddScoped<EtabsSectionPropertyExtractor>();
+    services.AddScoped<EtabsShellSectionResolver>();
+    services.AddScoped<CsiSendCollectionManager, EtabsSendCollectionManager>();
+    services.AddScoped<ISectionUnpacker, EtabsSectionUnpacker>();

    return services;
  }
@@ -9,14 +9,12 @@
    <Import_RootNamespace>Speckle.Connectors.ETABSShared</Import_RootNamespace>
  </PropertyGroup>
  <ItemGroup>
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\EtabsMaterialUnpacker.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\EtabsSectionUnpacker.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\EtabsSendCollectionManager.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\EtabsFrameSectionPropertyExtractor.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\EtabsMaterialPropertyExtractor.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\EtabsSectionPropertyDefinitionService.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\EtabsSectionPropertyExtractor.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\EtabsShellSectionPropertyExtractor.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\EtabsShellSectionResolver.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Plugin\EtabsPluginBase.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Plugin\EtabsSpeckleFormBase.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)ServiceRegistration.cs" />
@@ -2,63 +2,33 @@
 <Project>
  <PropertyGroup>
    <UseWpf>true</UseWpf>
+
    <Description>NextGen Speckle Connector for Autodesk Navisworks Manage</Description>
    <Authors>$(Authors) jonathon@speckle.systems</Authors>
    <PackageTags>$(PackageTags) connector nwd nwc nwf navisworks manage</PackageTags>

    <PluginBundleTarget>$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Navisworks.bundle</PluginBundleTarget>
-    <PluginVersionContentTarget>$(PluginBundleTarget)\Contents\$(NavisworksVersion)</PluginVersionContentTarget>
+    <PluginVersionContentTarget>$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Navisworks.bundle\Contents\$(NavisworksVersion)</PluginVersionContentTarget>
    <RootNamespace>Speckle.Connector.Navisworks</RootNamespace>
  </PropertyGroup>

-  <Target Name="PostBuild"
-          AfterTargets="Build"
-          Condition="'$(OS)' == 'Windows_NT' and '$(NavisworksVersion)' != ''">
+  <!-- Post Builds -->
+  <ItemGroup>
+    <RibbonFiles Include="$(OutDir)Plugin\NavisworksRibbon.*"/>
+    <ResourceFiles Include="$(OutDir)Resources\**\*.png"/>
+    <ResourceFiles Include="$(OutDir)Resources\**\*.ico"/>
+    <AllFiles Include="$(OutDir)*"/>
+  </ItemGroup>

+
+  <Target Name="PostBuild" AfterTargets="Build" Condition="'$(NavisworksVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
    <Message Text="Navisworks Version $(NavisworksVersion)" Importance="high"/>
-
    <RemoveDir Directories="$(PluginVersionContentTarget)" Condition="Exists('$(PluginVersionContentTarget)')"/>
-
-    <MakeDir Directories="
-      $(PluginBundleTarget);
-      $(PluginBundleTarget)\Contents;
-      $(PluginVersionContentTarget);
-      $(PluginVersionContentTarget)\en-US;
-      $(PluginVersionContentTarget)\Resources"/>
-
-    <!-- Re-evaluate outputs at execution time -->
-    <ItemGroup>
-      <PackageXml Include="$(OutDir)Plugin\PackageContents.xml"/>
-      <RibbonFiles Include="$(OutDir)Plugin\NavisworksRibbon.*"/>
-      <ResourceFiles Include="$(OutDir)Resources\**\*.png;$(OutDir)Resources\**\*.ico"/>
-      <AllFiles Include="$(OutDir)**\*.*"/>
-
-      <Message Text="AllFiles count: @(AllFiles->Count())" Importance="high"/>
-      <Warning Condition="'@(AllFiles)' == ''" Text="No files in $(OutDir) at PostBuild time."/>
-
-    </ItemGroup>
-
-    <Copy SourceFiles="@(PackageXml)"
-          DestinationFolder="$(PluginBundleTarget)\"
-          SkipUnchangedFiles="true"/>
-
-    <Copy SourceFiles="@(RibbonFiles)"
-          DestinationFolder="$(PluginVersionContentTarget)\en-US\"
-          SkipUnchangedFiles="true"/>
-
-    <Copy SourceFiles="@(ResourceFiles)"
-          DestinationFiles="@(ResourceFiles->'$(PluginVersionContentTarget)\Resources\%(RecursiveDir)%(Filename)%(Extension)')"
-          SkipUnchangedFiles="true"/>
-
-    <Copy SourceFiles="@(AllFiles)"
-          DestinationFiles="@(AllFiles->'$(PluginVersionContentTarget)\%(RecursiveDir)%(Filename)%(Extension)')"
-          SkipUnchangedFiles="true"/>
-
-    <Message Text="Copied build to $(PluginVersionContentTarget)" Importance="high"/>
-  </Target>
-
-  <Target Name="ValidateNavisworksVersion" BeforeTargets="PostBuild"
-          Condition="'$(NavisworksVersion)' == '' and '$(OS)' == 'Windows_NT'">
-    <Error Text="NavisworksVersion property is required for PostBuild packaging."/>
+  
+    <Copy SourceFiles="$(OutDir)Plugin\PackageContents.xml" DestinationFolder="$(PluginBundleTarget)\"/>
+    <Copy SourceFiles="@(RibbonFiles)" DestinationFolder="$(PluginVersionContentTarget)\en-US\"/>
+    <Copy SourceFiles="@(ResourceFiles)" DestinationFolder="$(PluginVersionContentTarget)\Resources\"/>
+  
+    <Copy SourceFiles="@(AllFiles)" DestinationFolder="$(PluginVersionContentTarget)\" />
  </Target>
 </Project>
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -305,7 +285,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2020": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -305,7 +285,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2021": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -305,7 +285,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2022": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -305,7 +285,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2023": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -169,27 +169,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -280,8 +259,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -305,7 +285,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2024": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -175,27 +175,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -286,8 +265,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -311,7 +291,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2025": {
@@ -357,12 +337,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -184,27 +184,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -287,8 +266,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -312,7 +292,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.navisworks2026": {
@@ -359,12 +339,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -15,7 +15,6 @@ using Speckle.Connectors.DUI.Bridge;
 using Speckle.Connectors.DUI.Models;
 using Speckle.Connectors.DUI.Models.Card.SendFilter;
 using Speckle.Connectors.DUI.WebView;
-using Speckle.Converter.Navisworks.Services;
 using Speckle.Converter.Navisworks.Settings;
 using Speckle.Converters.Common;
 using Speckle.Sdk.Models.GraphTraversal;
@@ -53,9 +52,6 @@ public static class NavisworksConnectorServiceRegistration
    serviceCollection.AddScoped<NavisworksMaterialUnpacker>();
    serviceCollection.AddScoped<NavisworksColorUnpacker>();

-    // Register dual shared geometry stores for instancing pattern
-    serviceCollection.AddScoped<InstanceStoreManager>();
-
    serviceCollection.AddSingleton<IAppIdleManager, NavisworksIdleManager>();

    // Sending operations
@@ -16,13 +16,7 @@ public class NavisworksColorUnpacker(
  IElementSelectionService selectionService
 )
 {
-  private static T SelectByRepresentationMode<T>(
-    RepresentationMode mode,
-    T active,
-    T permanent,
-    T original,
-    T defaultValue
-  ) =>
+  private static T Select<T>(RepresentationMode mode, T active, T permanent, T original, T defaultValue) =>
    mode switch
    {
      RepresentationMode.Active => active,
@@ -77,14 +71,14 @@ public class NavisworksColorUnpacker(

        using var defaultColor = new NAV.Color(1.0, 1.0, 1.0);

-        var representationColor = SelectByRepresentationMode(
+        var representationColor = Select(
          mode,
          geometry.ActiveColor,
          geometry.PermanentColor,
          geometry.OriginalColor,
          defaultColor
        );
-        var colorId = SelectByRepresentationMode(
+        var colorId = Select(
          mode,
          $"{geometry.ActiveColor.GetHashCode()}_{geometry.ActiveTransparency}".GetHashCode(),
          $"{geometry.PermanentColor.GetHashCode()}_{geometry.PermanentTransparency}".GetHashCode(),
@@ -130,49 +124,30 @@ public class NavisworksColorUnpacker(
    var comSelection = ComBridge.ToInwOpSelection([modelItem]);
    try
    {
-      var pathsCollection = comSelection.Paths();
-      try
+      foreach (ComApi.InwOaPath path in comSelection.Paths())
      {
-        foreach (ComApi.InwOaPath path in pathsCollection)
-        {
-          var fragmentsCollection = path.Fragments();
-          try
-          {
-            foreach (ComApi.InwOaFragment3 fragment in fragmentsCollection.OfType<ComApi.InwOaFragment3>())
-            {
-              fragment.GenerateSimplePrimitives(ComApi.nwEVertexProperty.eNORMAL, primitiveChecker);
+        GC.KeepAlive(path);

-              if (primitiveChecker.HasTriangles)
-              {
-                return false;
-              }
-            }
-          }
-          finally
+        foreach (ComApi.InwOaFragment3 fragment in path.Fragments())
+        {
+          GC.KeepAlive(fragment);
+
+          fragment.GenerateSimplePrimitives(ComApi.nwEVertexProperty.eNORMAL, primitiveChecker);
+
+          // Exit early if triangles are found
+          if (primitiveChecker.HasTriangles)
          {
-            if (fragmentsCollection != null)
-            {
-              System.Runtime.InteropServices.Marshal.ReleaseComObject(fragmentsCollection);
-            }
+            return false;
          }
        }
+      }

-        return primitiveChecker.HasLines || primitiveChecker.HasPoints || primitiveChecker.HasSnapPoints;
-      }
-      finally
-      {
-        if (pathsCollection != null)
-        {
-          System.Runtime.InteropServices.Marshal.ReleaseComObject(pathsCollection);
-        }
-      }
+      // Return true if any 2D primitives are found
+      return primitiveChecker.HasLines || primitiveChecker.HasPoints || primitiveChecker.HasSnapPoints;
    }
    finally
    {
-      if (comSelection != null)
-      {
-        System.Runtime.InteropServices.Marshal.ReleaseComObject(comSelection);
-      }
+      System.Runtime.InteropServices.Marshal.ReleaseComObject(comSelection);
    }
  }
 }
@@ -1,11 +1,7 @@
-using Autodesk.Navisworks.Api.ComApi;
-using Autodesk.Navisworks.Api.Interop.ComApi;
 using Microsoft.Extensions.Logging;
 using Speckle.Connector.Navisworks.Services;
-using Speckle.Converter.Navisworks.Constants;
 using Speckle.Converter.Navisworks.Helpers;
 using Speckle.Converter.Navisworks.Settings;
-using Speckle.Converter.Navisworks.ToSpeckle;
 using Speckle.Converters.Common;
 using Speckle.Objects.Other;
 using Speckle.Sdk;
@@ -15,17 +11,12 @@ namespace Speckle.Connector.Navisworks.HostApp;
 public class NavisworksMaterialUnpacker(
  ILogger<NavisworksMaterialUnpacker> logger,
  IConverterSettingsStore<NavisworksConversionSettings> converterSettings,
-  IElementSelectionService selectionService,
-  GeometryToSpeckleConverter converter
+  IElementSelectionService selectionService
 )
 {
-  private static T SelectByRepresentationMode<T>(
-    RepresentationMode mode,
-    T active,
-    T permanent,
-    T original,
-    T defaultValue
-  ) =>
+  // Helper function to select a property based on the representation mode
+  // Selector method for individual properties
+  private static T Select<T>(RepresentationMode mode, T active, T permanent, T original, T defaultValue) =>
    mode switch
    {
      RepresentationMode.Active => active,
@@ -73,87 +64,26 @@ public class NavisworksMaterialUnpacker(

        var navisworksObjectId = selectionService.GetModelItemPath(navisworksObject);
        var finalId = mergedIds.TryGetValue(navisworksObjectId, out var mergedId) ? mergedId : navisworksObjectId;
-
-        string hashId = "";
-        try
-        {
-          var item = selectionService.GetModelItemFromPath(finalId);
-          var comSelection = ComApiBridge.ToInwOpSelection([item]);
-          try
-          {
-            var paths = comSelection.Paths();
-            try
-            {
-              if (paths.Count > 0)
-              {
-                var firstPath = paths.OfType<InwOaPath>().FirstOrDefault();
-                if (firstPath != null)
-                {
-                  var fragments = firstPath.Fragments();
-                  try
-                  {
-                    if (fragments.Count > 1)
-                    {
-                      var fragmentId = converter.GenerateFragmentId(paths);
-                      hashId = $"{InstanceConstants.GEOMETRY_ID_PREFIX}{fragmentId}";
-                    }
-                  }
-                  finally
-                  {
-                    if (fragments != null)
-                    {
-                      System.Runtime.InteropServices.Marshal.ReleaseComObject(fragments);
-                    }
-                  }
-                }
-              }
-            }
-            finally
-            {
-              if (paths != null)
-              {
-                System.Runtime.InteropServices.Marshal.ReleaseComObject(paths);
-              }
-            }
-          }
-          finally
-          {
-            if (comSelection != null)
-            {
-              System.Runtime.InteropServices.Marshal.ReleaseComObject(comSelection);
-            }
-          }
-        }
-        catch (Exception ex) when (!ex.IsFatal())
-        { // If COM interop fails during hash generation, fall back to using finalId
-          logger.LogWarning(
-            ex,
-            "Failed to generate fragment hash ID for item {ItemId}, using finalId as fallback",
-            finalId
-          );
-          hashId = "";
-        }
-
        var geometry = navisworksObject.Geometry;
        var mode = converterSettings.Current.User.VisualRepresentationMode;

        using var defaultColor = new NAV.Color(1.0, 1.0, 1.0);

-        var renderColor = SelectByRepresentationMode(
+        var renderColor = Select(
          mode,
          geometry.ActiveColor,
          geometry.PermanentColor,
          geometry.OriginalColor,
          defaultColor
        );
-        var renderTransparency = SelectByRepresentationMode(
+        var renderTransparency = Select(
          mode,
          geometry.ActiveTransparency,
          geometry.PermanentTransparency,
          geometry.OriginalTransparency,
          0.0
        );
-        var renderMaterialId = SelectByRepresentationMode(
+        var renderMaterialId = Select(
          mode,
          $"{geometry.ActiveColor.GetHashCode()}_{geometry.ActiveTransparency}".GetHashCode(),
          $"{geometry.PermanentColor.GetHashCode()}_{geometry.PermanentTransparency}".GetHashCode(),
@@ -162,8 +92,9 @@ public class NavisworksMaterialUnpacker(
        );

        var materialName =
-          $"{MaterialConstants.DEFAULT_MATERIAL_NAME_PREFIX}{Math.Abs(ColorConverter.NavisworksColorToColor(renderColor).ToArgb())}";
+          $"NavisworksMaterial_{Math.Abs(ColorConverter.NavisworksColorToColor(renderColor).ToArgb())}";

+        // Check Item category for material name
        var itemCategory = navisworksObject.PropertyCategories.FindCategoryByDisplayName("Item");
        if (itemCategory != null)
        {
@@ -175,6 +106,7 @@ public class NavisworksMaterialUnpacker(
          }
        }

+        // Check Material category for material name
        var materialPropertyCategory = navisworksObject.PropertyCategories.FindCategoryByDisplayName("Material");
        if (materialPropertyCategory != null)
        {
@@ -188,14 +120,19 @@ public class NavisworksMaterialUnpacker(

        if (renderMaterialProxies.TryGetValue(renderMaterialId.ToString(), out RenderMaterialProxy? value))
        {
-          value.objects.Add(!string.IsNullOrEmpty(hashId) ? hashId : finalId);
+          value.objects.Add(finalId);
        }
        else
        {
          renderMaterialProxies[renderMaterialId.ToString()] = new RenderMaterialProxy()
          {
-            value = CreateRenderMaterial(materialName, renderTransparency, renderColor, renderMaterialId),
-            objects = [!string.IsNullOrEmpty(hashId) ? hashId : finalId]
+            value = ConvertRenderColorAndTransparencyToSpeckle(
+              materialName,
+              renderTransparency,
+              renderColor,
+              renderMaterialId
+            ),
+            objects = [finalId]
          };
        }
      }
@@ -208,7 +145,7 @@ public class NavisworksMaterialUnpacker(
    return renderMaterialProxies.Values.ToList();
  }

-  private static RenderMaterial CreateRenderMaterial(
+  private static RenderMaterial ConvertRenderColorAndTransparencyToSpeckle(
    string name,
    double transparency,
    NAV.Color navisworksColor,
@@ -219,9 +156,7 @@ public class NavisworksMaterialUnpacker(

    var speckleRenderMaterial = new RenderMaterial()
    {
-      name = !string.IsNullOrEmpty(name)
-        ? name
-        : $"{MaterialConstants.DEFAULT_MATERIAL_NAME_PREFIX}{Math.Abs(color.ToArgb())}",
+      name = !string.IsNullOrEmpty(name) ? name : $"NavisworksMaterial_{Math.Abs(color.ToArgb())}",
      opacity = 1 - transparency,
      metalness = 0,
      roughness = 1,
@@ -6,7 +6,6 @@ using Speckle.Connectors.Common.Caching;
 using Speckle.Connectors.Common.Conversion;
 using Speckle.Connectors.Common.Operations;
 using Speckle.Converter.Navisworks.Helpers;
-using Speckle.Converter.Navisworks.Services;
 using Speckle.Converter.Navisworks.Settings;
 using Speckle.Converters.Common;
 using Speckle.Objects.Data;
@@ -26,9 +25,7 @@ public class NavisworksRootObjectBuilder(
  ISdkActivityFactory activityFactory,
  NavisworksMaterialUnpacker materialUnpacker,
  NavisworksColorUnpacker colorUnpacker,
-  IElementSelectionService elementSelectionService,
-  IUiUnitsCache uiUnitsCache,
-  InstanceStoreManager instanceStoreManager
+  IElementSelectionService elementSelectionService
 ) : IRootObjectBuilder<NAV.ModelItem>
 {
  private bool SkipNodeMerging { get; set; }
@@ -43,45 +40,32 @@ public class NavisworksRootObjectBuilder(
  )
  {
 #if DEBUG
-    SkipNodeMerging = true;
+    // This is a temporary workaround to disable node merging for debugging purposes - false is default, true is for debugging
+    SkipNodeMerging = false;
 #endif
    using var activity = activityFactory.Start("Build");

    ValidateInputs(navisworksModelItems, projectId, onOperationProgressed);

+    // 2. Initialize root collection
    var rootCollection = InitializeRootCollection();

-    (Dictionary<string, Base?> convertedElements, List<SendConversionResult> conversionResults) =
-      await ConvertModelItemsAsync(navisworksModelItems, projectId, onOperationProgressed, cancellationToken);
+    // 3. Convert all model items and store results
+    var (convertedElements, conversionResults) = await ConvertModelItemsAsync(
+      navisworksModelItems,
+      projectId,
+      onOperationProgressed,
+      cancellationToken
+    );

    ValidateConversionResults(conversionResults);

    var groupedNodes = SkipNodeMerging ? [] : GroupSiblingGeometryNodes(navisworksModelItems);
    var finalElements = BuildFinalElements(convertedElements, groupedNodes);
-    List<Base> geometryDefinitions = instanceStoreManager.GetGeometryDefinitions();

    await AddProxiesToCollection(rootCollection, navisworksModelItems, groupedNodes);

-    var geometryDefinitionsCollection = new Collection
-    {
-      name = "Geometry Definitions",
-      ["units"] = converterSettings.Current.Derived.SpeckleUnits,
-      elements = geometryDefinitions
-    };
-
-    var mainElementsCollection = new Collection
-    {
-      name = rootCollection.name,
-      ["units"] = converterSettings.Current.Derived.SpeckleUnits,
-      elements = finalElements
-    };
-
-    rootCollection.elements = [mainElementsCollection];
-    if (geometryDefinitions.Count > 0)
-    {
-      rootCollection.elements.Add(geometryDefinitionsCollection);
-    }
-
+    rootCollection.elements = finalElements;
    return new RootObjectBuilderResult(rootCollection, conversionResults);
  }

@@ -128,10 +112,49 @@ public class NavisworksRootObjectBuilder(
    int processedCount = 0;
    int totalCount = navisworksModelItems.Count;

+    // Store instance definitions by their definition ID (hash of the first instance)
+    Dictionary<int, Base> instanceDefinitions = [];
+
    foreach (var item in navisworksModelItems)
    {
      cancellationToken.ThrowIfCancellationRequested();
+      string applicationId = elementSelectionService.GetModelItemPath(item);
+
+      if (item.InstanceHashCode != 0)
+      {
+        var instanceDefinitionId = item.Instances.First.GetHashCode();
+
+        // If this instance definition is already converted, create an instance reference
+        if (instanceDefinitions.TryGetValue(instanceDefinitionId, out var definitionBase))
+        {
+          var instanceBase = CreateInstanceReference(definitionBase, item);
+          convertedBases[applicationId] = instanceBase;
+          
+          results.Add(new SendConversionResult(Status.SUCCESS, applicationId, item.GetType().Name, instanceBase));
+          processedCount++;
+          onOperationProgressed.Report(new CardProgress("Converting", (double)processedCount / totalCount));
+          continue;
+        }
+      }
+
+      // Convert the item (either a new instance definition or non-instance item)
      var converted = ConvertNavisworksItem(item, convertedBases, projectId);
+      if (converted.Status == Status.SUCCESS)
+      {
+        results.Add(converted);
+
+        // If this is an instance definition, store it for reuse
+        if (item.InstanceHashCode != 0)
+        {
+          var instanceDefinitionId = item.Instances.First.GetHashCode();
+          instanceDefinitions[instanceDefinitionId] = convertedBases[converted.SourceId]!;
+        }
+
+        processedCount++;
+        onOperationProgressed.Report(new CardProgress("Converting", (double)processedCount / totalCount));
+        continue;
+      }
+
      results.Add(converted);
      processedCount++;
      onOperationProgressed.Report(new CardProgress("Converting", (double)processedCount / totalCount));
@@ -153,10 +176,12 @@ public class NavisworksRootObjectBuilder(
    Dictionary<string, List<NAV.ModelItem>> groupedNodes
  )
  {
+    // First build the grouped nodes as before
    var finalElements = new List<Base>();
    var processedPaths = new HashSet<string>();
    AddGroupedElements(finalElements, convertedBases, groupedNodes, processedPaths);

+    // If hierarchy mode is enabled, reorganize into proper nested structure
    if (converterSettings.Current.User.PreserveModelHierarchy)
    {
      var hierarchyBuilder = new NavisworksHierarchyBuilder(
@@ -165,9 +190,12 @@ public class NavisworksRootObjectBuilder(
        elementSelectionService
      );

-      return hierarchyBuilder.BuildHierarchy();
+      var hierarchy = hierarchyBuilder.BuildHierarchy();
+
+      return hierarchy;
    }

+    // Otherwise continue with flat mode
    AddRemainingElements(finalElements, convertedBases, processedPaths);
    return finalElements;
  }
@@ -224,17 +252,24 @@ public class NavisworksRootObjectBuilder(
    }
  }

-  private (string name, string path) GetElementNameAndPath(string applicationId)
+  private (string name, string path) GetContext(string applicationId)
  {
    var modelItem = elementSelectionService.GetModelItemFromPath(applicationId);
    var context = HierarchyHelper.ExtractContext(modelItem);
    return (context.Name, context.Path);
  }

+  /// <summary>
+  /// Processes and adds any remaining non-grouped elements.
+  /// </summary>
+  /// <remarks>
+  /// Handles both Collection and Base type elements differently.
+  /// Only processes elements that weren't handled in grouped processing.
+  /// </remarks>
  private NavisworksObject CreateNavisworksObject(string groupKey, List<Base> siblingBases)
  {
    string cleanParentPath = ElementSelectionHelper.GetCleanPath(groupKey);
-    (string name, string path) = GetElementNameAndPath(cleanParentPath);
+    (string name, string path) = GetContext(cleanParentPath);

    return new NavisworksObject
    {
@@ -242,11 +277,16 @@ public class NavisworksRootObjectBuilder(
      displayValue = siblingBases.SelectMany(b => b["displayValue"] as List<Base> ?? []).ToList(),
      properties = siblingBases.First()["properties"] as Dictionary<string, object?> ?? [],
      units = converterSettings.Current.Derived.SpeckleUnits,
-      applicationId = groupKey,
+      applicationId = groupKey, // Use the full composite key as applicationId to preserve uniqueness
      ["path"] = path
    };
  }

+  /// <summary>
+  /// Creates a NavisworksObject from a single converted base.
+  /// </summary>
+  /// <param name="convertedBase">The converted Speckle Base object.</param>
+  /// <returns>A new NavisworksObject containing the converted data.</returns>
  private NavisworksObject? CreateNavisworksObject(Base convertedBase)
  {
    if (convertedBase.applicationId == null)
@@ -254,16 +294,14 @@ public class NavisworksRootObjectBuilder(
      return null;
    }

-    (string name, string path) = GetElementNameAndPath(convertedBase.applicationId);
-
-    var units = uiUnitsCache.Ensure();
+    (string name, string path) = GetContext(convertedBase.applicationId);

    return new NavisworksObject
    {
      name = name,
      displayValue = convertedBase["displayValue"] as List<Base> ?? [],
      properties = convertedBase["properties"] as Dictionary<string, object?> ?? [],
-      units = units.ToString(),
+      units = converterSettings.Current.Derived.SpeckleUnits,
      applicationId = convertedBase.applicationId,
      ["path"] = path
    };
@@ -289,16 +327,96 @@ public class NavisworksRootObjectBuilder(
      rootCollection[ProxyKeys.COLOR] = colors;
    }

-    var instanceDefinitionProxies = instanceStoreManager.GetInstanceDefinitionProxies();
-
-    if (instanceDefinitionProxies.Count > 0)
-    {
-      rootCollection[ProxyKeys.INSTANCE_DEFINITION] = instanceDefinitionProxies.ToList();
-    }
-
    return Task.CompletedTask;
  }

+  /// <summary>
+  /// Creates an instance reference that points to a converted base definition with instance-specific transforms.
+  /// </summary>
+  /// <param name="definitionBase">The converted base definition to reference.</param>
+  /// <param name="instanceItem">The Navisworks instance item.</param>
+  /// <returns>A Base object representing the instance with transforms.</returns>
+  private Base CreateInstanceReference(Base definitionBase, NAV.ModelItem instanceItem)
+  {
+    // Get the instance transform from Navisworks
+    var instanceTransform = GetInstanceTransform(instanceItem);
+    
+    // Create a new base that references the definition
+    var instanceBase = new Base
+    {
+      applicationId = elementSelectionService.GetModelItemPath(instanceItem),
+      // Store reference to the definition
+      ["@definition"] = definitionBase.applicationId,
+      // Store the instance transform
+      ["transform"] = instanceTransform,
+      // Copy the display value (geometry) from the definition
+      ["displayValue"] = definitionBase["displayValue"],
+      // Copy other properties from definition if needed
+      ["properties"] = definitionBase["properties"]
+    };
+
+    return instanceBase;
+  }
+
+  /// <summary>
+  /// Extracts the transform matrix from a Navisworks instance item.
+  /// </summary>
+  /// <param name="instanceItem">The Navisworks instance item.</param>
+  /// <returns>A transform matrix as a flat array or null if no transform.</returns>
+  private double[]? GetInstanceTransform(NAV.ModelItem instanceItem)
+  {
+    try
+    {
+      // Get the transform from the instance
+      var transform = instanceItem.Transform;
+      if (transform == null)
+      {
+        return null;
+      }
+
+      // Convert the Navisworks transform to a flat array
+      // For now, return identity matrix as POC - proper transform extraction needs Navisworks API research
+      var matrix = new double[16];
+      // Identity matrix
+      matrix[0] = 1;
+      matrix[1] = 0;
+      matrix[2] = 0;
+      matrix[3] = 0;
+      matrix[4] = 0;
+      matrix[5] = 1;
+      matrix[6] = 0;
+      matrix[7] = 0;
+      matrix[8] = 0;
+      matrix[9] = 0;
+      matrix[10] = 1;
+      matrix[11] = 0;
+      matrix[12] = 0;
+      matrix[13] = 0;
+      matrix[14] = 0;
+      matrix[15] = 1;
+
+      return matrix;
+    }
+    catch (Exception ex) when (!ex.IsFatal())
+    {
+      logger.LogWarning(
+        ex,
+        "Failed to extract transform from instance {id}",
+        elementSelectionService.GetModelItemPath(instanceItem)
+      );
+      return null;
+    }
+  }
+
+  /// <summary>
+  /// Converts a single Navisworks item to a Speckle object.
+  /// </summary>
+  /// <remarks>
+  /// Attempts to retrieve from cache first.
+  /// Falls back to fresh conversion if not cached.
+  /// Logs errors but doesn't throw exceptions.
+  /// </remarks>
+  /// <returns>A SendConversionResult indicating success or failure.</returns>
  private SendConversionResult ConvertNavisworksItem(
    NAV.ModelItem navisworksItem,
    Dictionary<string, Base?> convertedBases,
@@ -6,7 +6,6 @@ using Speckle.Connector.Navisworks.DependencyInjection;
 using Speckle.Connector.Navisworks.HostApp;
 using Speckle.Connector.Navisworks.Plugin.Tools;
 using Speckle.Connectors.Common;
-using Speckle.Connectors.Common.Operations;
 using Speckle.Connectors.DUI;
 using Speckle.Connectors.DUI.WebView;
 using Speckle.Converter.Navisworks.DependencyInjection;
@@ -47,8 +46,6 @@ internal sealed class Connector : NAV.Plugins.DockPanePlugin
    Container = services.BuildServiceProvider();
    Container.UseDUI();
    Container.GetRequiredService<NavisworksDocumentEvents>();
-    Container.GetRequiredService<ISerializationOptions>().SkipCacheRead = true;
-    Container.GetRequiredService<ISerializationOptions>().SkipCacheWrite = true;

    var u = Container.GetRequiredService<DUI3ControlWebView>();

@@ -191,27 +191,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -302,8 +281,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -326,7 +306,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.revit2022": {
@@ -371,11 +351,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
      },
      "Speckle.Revit.API": {
@@ -383,6 +363,29 @@
        "requested": "[2023.0.0, )",
        "resolved": "2022.0.2.1",
        "contentHash": "IrLN4WyI2ix+g3zCpo7sX8zNB3FrtrdQ3E2RpceGVPNG00v8OfD+Kei7o1bn1u/ML46iBYRAr/JcsLbwfUQsBw=="
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -191,27 +191,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -302,8 +281,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -326,7 +306,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.revit2023": {
@@ -371,11 +351,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
      },
      "Speckle.Revit.API": {
@@ -383,6 +363,29 @@
        "requested": "[2023.0.0, )",
        "resolved": "2023.0.0",
        "contentHash": "tq40eD7psgTbV+epNouYyqfo6+hEi7FmXZqcxEOsAV7zfYyWhL6Rt3vmojkWGNuerGbH6oRI6KIIxrnlCNb8Hw=="
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -191,27 +191,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -302,8 +281,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -326,7 +306,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.revit2024": {
@@ -371,11 +351,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
      },
      "Speckle.Revit.API": {
@@ -383,6 +363,29 @@
        "requested": "[2023.0.0, )",
        "resolved": "2024.0.0",
        "contentHash": "a4dsvZ00ocvzTgCD6dUdydf0jIZDVcDhs6dUX9cv+y3aTDbU8rmzhYXWt8sThedIG+IPSVa0vHmAH9pKiJL3SQ=="
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -171,25 +171,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -245,8 +226,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -269,7 +251,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.revit2025": {
@@ -314,11 +296,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
      },
      "Speckle.Revit.API": {
@@ -326,6 +308,27 @@
        "requested": "[2023.0.0, )",
        "resolved": "2025.0.0",
        "contentHash": "Hwf/3Ydc7KxvjgD9pSZKLSJRsFTsxYg95YyTm6f43hcsGjmk49GsLFQt921Z9OcvUVewOggQHcmBgti+P2EPHw=="
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -164,25 +164,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -238,8 +219,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.dui": {
@@ -262,7 +244,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.revit2026": {
@@ -298,11 +280,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
      },
      "Speckle.Revit.API": {
@@ -310,6 +292,27 @@
        "requested": "[2023.0.0, )",
        "resolved": "2026.0.0",
        "contentHash": "SiqqKbF1pXyZWXZhAl2JhjYhTt7RiYO5JaQrAjq+OlleAjT4zatwAp/DnTwQspFbP7UZr3b2Ed2kuWNN0ZFelw=="
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -1,4 +1,3 @@
-using System.Runtime.InteropServices;
 using System.Windows.Controls;
 using System.Windows.Threading;
 using Autodesk.Revit.UI;
@@ -32,10 +31,6 @@ public partial class CefSharpPanel : Page, Autodesk.Revit.UI.IDockablePaneProvid
        DispatcherPriority.Background
      );
    }
-    catch (SEHException)
-    {
-      //do nothing as we can't control external components
-    }
    catch (OperationCanceledException)
    {
      //do nothing, happens when closing Revit while a script is being executed
@@ -106,7 +106,7 @@ internal sealed class BasicConnectorBindingRevit : IBasicConnectorBinding

      if (senderModelCard.SendFilter is RevitViewsFilter revitViewsFilter)
      {
-        var view = revitViewsFilter.GetView(activeUIDoc.Document);
+        var view = revitViewsFilter.GetView();
        if (view is not null)
        {
          await _revitTask
@@ -29,11 +29,9 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
  private readonly DocumentModelStore _store;
  private readonly ICancellationManager _cancellationManager;
  private readonly ISendConversionCache _sendConversionCache;
-
  private readonly ToSpeckleSettingsManager _toSpeckleSettingsManager;
  private readonly ElementUnpacker _elementUnpacker;
  private readonly IRevitConversionSettingsFactory _revitConversionSettingsFactory;
-  private readonly RevitToSpeckleCacheSingleton _revitToSpeckleCacheSingleton;
  private readonly ITopLevelExceptionHandler _topLevelExceptionHandler;
  private readonly LinkedModelHandler _linkedModelHandler;
  private readonly IThreadContext _threadContext;
@@ -57,7 +55,6 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
    ToSpeckleSettingsManager toSpeckleSettingsManager,
    ElementUnpacker elementUnpacker,
    IRevitConversionSettingsFactory revitConversionSettingsFactory,
-    RevitToSpeckleCacheSingleton revitToSpeckleCacheSingleton,
    ITopLevelExceptionHandler topLevelExceptionHandler,
    LinkedModelHandler linkedModelHandler,
    IThreadContext threadContext,
@@ -74,7 +71,6 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
    _toSpeckleSettingsManager = toSpeckleSettingsManager;
    _elementUnpacker = elementUnpacker;
    _revitConversionSettingsFactory = revitConversionSettingsFactory;
-    _revitToSpeckleCacheSingleton = revitToSpeckleCacheSingleton;
    _topLevelExceptionHandler = topLevelExceptionHandler;
    _linkedModelHandler = linkedModelHandler;
    _threadContext = threadContext;
@@ -94,7 +90,7 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding

  public List<ISendFilter> GetSendFilters() =>
    [
-      new RevitSelectionFilter { IsDefault = true },
+      new RevitSelectionFilter() { IsDefault = true },
      new RevitViewsFilter(_revitContext),
      new RevitCategoriesFilter(_revitContext)
    ];
@@ -114,11 +110,6 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding

  public async Task Send(string modelCardId)
  {
-    var document = _revitContext.UIApplication?.ActiveUIDocument?.Document;
-    if (document == null)
-    {
-      throw new SpeckleException("No document is active for sending.");
-    }
    using var manager = _sendOperationManagerFactory.Create();

    await manager.Process<DocumentToConvert>(
@@ -129,20 +120,24 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
        sp.GetRequiredService<IConverterSettingsStore<RevitConversionSettings>>()
          .Initialize(
            _revitConversionSettingsFactory.Create(
-              _toSpeckleSettingsManager.GetDetailLevelSetting(document, card),
-              _toSpeckleSettingsManager.GetReferencePointSetting(document, card),
-              _toSpeckleSettingsManager.GetSendParameterNullOrEmptyStringsSetting(document, card),
-              _toSpeckleSettingsManager.GetLinkedModelsSetting(document, card),
-              _toSpeckleSettingsManager.GetSendRebarsAsVolumetric(document, card)
+              _toSpeckleSettingsManager.GetDetailLevelSetting(card),
+              _toSpeckleSettingsManager.GetReferencePointSetting(card),
+              _toSpeckleSettingsManager.GetSendParameterNullOrEmptyStringsSetting(card),
+              _toSpeckleSettingsManager.GetLinkedModelsSetting(card),
+              _toSpeckleSettingsManager.GetSendRebarsAsVolumetric(card)
            )
          );
      },
-      async x => await RefreshElementsIdsOnSender(document, x.NotNull())
+      async x => await RefreshElementsIdsOnSender(x.NotNull())
    );
  }

-  private async Task<List<DocumentToConvert>> RefreshElementsIdsOnSender(Document document, SenderModelCard modelCard)
+  private async Task<List<DocumentToConvert>> RefreshElementsIdsOnSender(SenderModelCard modelCard)
  {
+    var activeUIDoc =
+      _revitContext.UIApplication?.ActiveUIDocument
+      ?? throw new SpeckleException("Unable to retrieve active UI document");
+
    if (modelCard.SendFilter.NotNull() is IRevitSendFilter viewFilter)
    {
      viewFilter.SetContext(_revitContext);
@@ -152,7 +147,10 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
      () => Task.FromResult(modelCard.SendFilter.NotNull().RefreshObjectIds())
    );

-    var allElements = selectedObjects.Select(uid => document.GetElement(uid)).Where(el => el is not null).ToList();
+    var allElements = selectedObjects
+      .Select(uid => activeUIDoc.Document.GetElement(uid))
+      .Where(el => el is not null)
+      .ToList();

    // split elements between main model and linked models
    var elementsOnMainModel = allElements.Where(el => el is not RevitLinkInstance).ToList();
@@ -160,11 +158,14 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding

    // should ideally reuse the initialized value from the scoped IConverterSettingsStore<RevitConversionSettings>.
    // but, it's scoped and to avoid bigger scarier changes I'm re-fetching the setting here (inexpensive operation?)
-    Transform? mainModelTransform = _toSpeckleSettingsManager.GetReferencePointSetting(document, modelCard);
-    List<DocumentToConvert> documentElementContexts = [new(mainModelTransform, document, elementsOnMainModel)];
+    Transform? mainModelTransform = _toSpeckleSettingsManager.GetReferencePointSetting(modelCard);
+    List<DocumentToConvert> documentElementContexts =
+    [
+      new(mainModelTransform, activeUIDoc.Document, elementsOnMainModel)
+    ];

    // get the linked models setting - this decision belongs at this level
-    bool includeLinkedModels = _toSpeckleSettingsManager.GetLinkedModelsSetting(document, modelCard);
+    bool includeLinkedModels = _toSpeckleSettingsManager.GetLinkedModelsSetting(modelCard);

    // ⚠️ process linked models - RevitSendBinding controls the flow based on settings!
    // If setting not enabled, we won't unpack (see if-else block)
@@ -191,12 +192,7 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
        if (includeLinkedModels)
        {
          // handler is only responsible for element collection mechanics
-          var linkedElements = _linkedModelHandler.GetLinkedModelElements(
-            document,
-            modelCard.SendFilter,
-            linkedDoc,
-            transform
-          );
+          var linkedElements = _linkedModelHandler.GetLinkedModelElements(modelCard.SendFilter, linkedDoc, transform);
          linkedDocumentContexts.Add(new(transform, linkedDoc, linkedElements));
        }
        // ⚠️ when disabled, still adds empty contexts to maintain warning generation in RevitRootObjectBuilder
@@ -336,14 +332,9 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding

  private async Task PostSetObjectIds()
  {
-    var document = _revitContext.UIApplication?.ActiveUIDocument?.Document;
-    if (document == null)
-    {
-      return;
-    }
    foreach (var sender in _store.GetSenders().ToList())
    {
-      await RefreshElementsIdsOnSender(document, sender);
+      await RefreshElementsIdsOnSender(sender);
    }
  }

@@ -453,7 +444,6 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
  private async Task OnDocumentChanged()
  {
    _sendConversionCache.ClearCache();
-    _revitToSpeckleCacheSingleton.ClearCache();

    if (_cancellationManager.NumberOfOperations > 0)
    {
@@ -58,7 +58,6 @@ public static class ServiceRegistration
    serviceCollection.AddScoped<SendOperation<DocumentToConvert>>();
    serviceCollection.AddScoped<ElementUnpacker>();
    serviceCollection.AddScoped<LevelUnpacker>();
-    serviceCollection.AddScoped<ViewUnpacker>();
    serviceCollection.AddScoped<SendCollectionManager>();
    serviceCollection.AddScoped<IRootObjectBuilder<DocumentToConvert>, RevitRootObjectBuilder>();
    serviceCollection.AddSingleton<ISendConversionCache, SendConversionCache>();
@@ -75,6 +74,7 @@ public static class ServiceRegistration
    serviceCollection.AddSingleton<RevitUtils>();
    serviceCollection.AddSingleton<IFailuresPreprocessor, HideWarningsFailuresPreprocessor>();
    serviceCollection.AddSingleton(DefaultTraversal.CreateTraversalFunc());
+
    serviceCollection.AddScoped<LocalToGlobalConverterUtils>();

    // operation progress manager
@@ -1,6 +1,5 @@
 using Autodesk.Revit.DB;
 using Autodesk.Revit.DB.Architecture;
-using Speckle.Converters.RevitShared.Extensions;

 namespace Speckle.Connectors.Revit.HostApp;

@@ -24,11 +23,11 @@ public class ElementUnpacker
    // Step 1: unpack groups
    var atomicObjects = UnpackElements(selectionElements, doc);

-    // Step 2: Deduplicate parent-child elements in selection
-    // Removes child elements (mullions, panels, top rails, stacked wall members) when
-    // their parent element is also selected, since parents include children in their conversion.
-    // Children are only converted independently when their parent is NOT in the selection.
-    return RemoveKnownChildElementsWhenParentPresent(atomicObjects, doc);
+    // Step 2: pack curtain wall elements, once we know the full extent of our flattened item list.
+    // The behaviour we're looking for:
+    // If parent wall is part of selection, does not select individual elements out. Otherwise, selects individual elements (Panels, Mullions) as atomic objects.
+    // NOTE: this also conditionally "packs" stacked wall elements if their parent is present. See detailed note inside the function.
+    return PackCurtainWallElementsAndStackedWalls(atomicObjects, doc);
  }

  /// <summary>
@@ -109,7 +108,7 @@ public class ElementUnpacker
  // We use the nullable document (happiness level 5/10) for the sake of linked models - bc we use this function in 2 different places
  // 1- RootObjectBuilder with linked model document - otherwise we cannot unpack elements from correct document.
  // 2- Evicting the cache while introducing the settings
-  private List<Element> RemoveKnownChildElementsWhenParentPresent(List<Element> elements, Document doc)
+  private List<Element> PackCurtainWallElementsAndStackedWalls(List<Element> elements, Document doc)
  {
    //just used for contains so use ToHashSet
    var ids = elements.Select(el => el.Id).ToHashSet();
@@ -132,37 +131,64 @@ public class ElementUnpacker
      // If you wonder why revit is driving people to insanity, this is one of those moments.
      // See [CNX-851: Stacked Wall Duplicate Geometry or Materials not applied](https://linear.app/speckle/issue/CNX-851/stacked-wall-duplicate-geometry-or-materials-not-applied)
      || (element is Wall { IsStackedWallMember: true } wall && ids.Contains(wall.StackedWallOwnerId))
-      // Railings: Remove TopRail when parent railing is selected
-      // Prevents duplication since railing converter includes TopRail as a child element
-      // TODO: Consider adding HandRail support (also inherits from ContinuousRail)
-      || (
-        element is TopRail topRail
-        && doc.GetElement(topRail.HostRailingId) is Railing railing
-        && ids.Contains(railing.Id)
-      )
    );
    return elements;
  }

  /// <summary>
-  /// Returns element IDs and their known child element IDs for cache tracking.
-  /// Uses <see cref="ElementExtensions.GetKnownChildrenElements"/> to determine which children to include.
+  /// Given a set of atomic elements, it will return a list of all their ids as well as their subelements. This currently handles <b>curtain walls</b> and <b>stacked walls</b>.
+  /// This might not be an exhaustive list of valid objects with "subelements" in revit, and will need revisiting.
  /// </summary>
-  /// <param name="elements">Elements to process</param>
-  /// <returns>Flattened list of parent and child element IDs</returns>
+  /// <param name="elements"></param>
+  /// <returns></returns>
  public List<string> GetElementsAndSubelementIdsFromAtomicObjects(List<Element> elements)
  {
    var ids = new HashSet<string>();
    foreach (var element in elements)
    {
-      // add the element's own ID
-      ids.Add(element.Id.ToString());
-
-      // add all known children IDs using the extension method. trying to consolidate duplication here with converter
-      foreach (var childId in element.GetKnownChildrenElements())
+      switch (element)
      {
-        ids.Add(childId.ToString());
+        case Wall wall:
+          if (wall.CurtainGrid is { } grid)
+          {
+            foreach (var mullionId in grid.GetMullionIds())
+            {
+              ids.Add(mullionId.ToString());
+            }
+            foreach (var panelId in grid.GetPanelIds())
+            {
+              ids.Add(panelId.ToString());
+            }
+          }
+          else if (wall.IsStackedWall)
+          {
+            foreach (var stackedWallId in wall.GetStackedWallMemberIds())
+            {
+              ids.Add(stackedWallId.ToString());
+            }
+          }
+          break;
+        case FootPrintRoof footPrintRoof:
+          if (footPrintRoof.CurtainGrids is { } gs)
+          {
+            foreach (CurtainGrid roofGrid in gs)
+            {
+              foreach (var mullionId in roofGrid.GetMullionIds())
+              {
+                ids.Add(mullionId.ToString());
+              }
+              foreach (var panelId in roofGrid.GetPanelIds())
+              {
+                ids.Add(panelId.ToString());
+              }
+            }
+          }
+          break;
+        default:
+          break;
      }
+
+      ids.Add(element.Id.ToString());
    }

    return ids.ToList();
@@ -34,22 +34,18 @@ public class LevelUnpacker
    Dictionary<string, LevelProxy> levelProxies = new();
    foreach (var element in elements)
    {
-      // NOTE: Use level.UniqueId (not element.LevelId) as key
-      // face-based instances don't have a valid element.LevelId, hence all the changes in the LevelExtractor
-      var level = _levelExtractor.GetLevel(element);
-      if (level is null)
-      {
-        continue;
-      }
-
-      string levelKey = level.UniqueId;
-
-      if (levelProxies.TryGetValue(levelKey, out LevelProxy? levelProxy))
+      if (levelProxies.TryGetValue(element.LevelId.ToString(), out LevelProxy? levelProxy))
      {
        levelProxy.objects.Add(element.UniqueId);
      }
      else
      {
+        var level = _levelExtractor.GetLevel(element);
+        if (level is null)
+        {
+          continue;
+        }
+
        var levelDataObject = new DataObject()
        {
          name = level.Name,
@@ -57,11 +53,11 @@ public class LevelUnpacker
          properties = _propertiesExtractor.GetProperties(level)
        };
        var unitSettings = _converterSettings.Current.Document.GetUnits();
-        var lengthUnitType = unitSettings.GetFormatOptions(SpecTypeId.Length).GetUnitTypeId();
+        var lengthUnitType = unitSettings.GetFormatOptions(Autodesk.Revit.DB.SpecTypeId.Length).GetUnitTypeId();
        levelDataObject["elevation"] = UnitUtils.ConvertFromInternalUnits(level.Elevation, lengthUnitType);
        levelDataObject["units"] = _converterSettings.Current.SpeckleUnits;

-        levelProxies[levelKey] = new LevelProxy()
+        levelProxies[element.LevelId.ToString()] = new LevelProxy()
        {
          applicationId = level.UniqueId,
          objects = [element.UniqueId],
@@ -3,6 +3,7 @@ using Autodesk.Revit.DB;
 using Speckle.Connectors.DUI.Models.Card.SendFilter;
 using Speckle.Connectors.RevitShared;
 using Speckle.Connectors.RevitShared.Operations.Send.Filters;
+using Speckle.Converters.RevitShared.Helpers;
 using Speckle.Sdk;
 using Speckle.Sdk.Common;

@@ -16,19 +17,20 @@ namespace Speckle.Connectors.Revit.HostApp;
 /// </summary>
 public class LinkedModelHandler
 {
+  private readonly RevitContext _revitContext;
  public Dictionary<string, string> LinkedModelDisplayNames { get; } = new();

+  public LinkedModelHandler(RevitContext revitContext)
+  {
+    _revitContext = revitContext;
+  }
+
  /// <summary>
  /// Gets elements from a linked document based on the provided send filter.
  /// This method handles the specifics of element collection but doesn't make decisions
  /// about whether the linked model should be processed - that's the caller's responsibility.
  /// </summary>
-  public List<Element> GetLinkedModelElements(
-    Document currentDocument,
-    ISendFilter sendFilter,
-    Document linkedDocument,
-    Transform? transform
-  )
+  public List<Element> GetLinkedModelElements(ISendFilter sendFilter, Document linkedDocument, Transform? transform)
  {
    // send mode → Categories
    if (sendFilter is RevitCategoriesFilter categoryFilter && categoryFilter.SelectedCategories is not null)
@@ -46,15 +48,19 @@ public class LinkedModelHandler
    }

    // send mode → Views (taken from the legacy code)
-    if (sendFilter is RevitViewsFilter viewFilter && viewFilter.GetView(currentDocument) != null)
+    if (sendFilter is RevitViewsFilter viewFilter && viewFilter.GetView() != null)
    {
-      RevitLinkInstance linkInstance = FindLinkInstanceForDocument(linkedDocument.PathName, currentDocument, transform);
+      RevitLinkInstance linkInstance = FindLinkInstanceForDocument(
+        linkedDocument.PathName,
+        _revitContext.UIApplication.NotNull().ActiveUIDocument.Document,
+        transform
+      );

 #if REVIT2024_OR_GREATER
      // revit 2024 and 2025 we can use the three-parameter constructor to get only visible elements
      using var viewCollector = new FilteredElementCollector(
-        currentDocument,
-        viewFilter.GetView(currentDocument).NotNull().Id,
+        _revitContext.UIApplication.ActiveUIDocument.Document,
+        viewFilter.GetView().NotNull().Id,
        linkInstance.Id
      );

@@ -64,7 +70,7 @@ public class LinkedModelHandler
      // 🚨 LIMITATION: in Revit 2023 and below, we can only check if the entire linked model is visible,
      // not individual elements within it. If the linked model is visible, all its elements will be included.
      // constructor overload pertaining to searching and filtering visible elements from a revit link only added 2024.
-      if (linkInstance.IsHidden(viewFilter.GetView(currentDocument).NotNull()))
+      if (linkInstance.IsHidden(viewFilter.GetView().NotNull()))
      {
        return new List<Element>(); // if the linked model is hidden, return no elements
      }
@@ -97,12 +97,10 @@ internal sealed class RevitDocumentStore : DocumentModelStore
    try
    {
      var key = GetKeyForDocument(document);
-      if (key is null)
+      if (key != null)
      {
-        LoadFromString(null);
-        return;
+        _jsonCacheManager.UpdateObject(key, modelCardState);
      }
-      _jsonCacheManager.UpdateObject(key, modelCardState);
    }
    catch (Exception ex) when (!ex.IsFatal())
    {
@@ -113,17 +111,11 @@ internal sealed class RevitDocumentStore : DocumentModelStore

  private string? GetKeyForDocument(Document doc)
  {
-#if REVIT2024_OR_GREATER
-    return doc.CreationGUID.ToString();
-#else
-    //basically, no document state will ever be saved when it's a new document.  It must be saved first for path name to be a valid value.
-    var x = doc.PathName;
-    if (string.IsNullOrEmpty(x))
-    {
-      return doc.Title;
-    }
-    return x;
+    string? id = doc?.ProjectInformation?.UniqueId; //ProjectInformation Should only be null for family docs
+#if REVIT_2024_OR_GREATER
+    id ??= doc.CreationGUID.ToString(); //fallback for family docs
 #endif
+    return id;
  }

  protected override void LoadState()
@@ -136,12 +128,14 @@ internal sealed class RevitDocumentStore : DocumentModelStore
    }

    var key = GetKeyForDocument(document);
-    if (key is null)
+    if (key != null)
    {
-      LoadFromString(null);
-      return;
+      var state = _jsonCacheManager.GetObject(key);
+      if (state == null)
+      {
+        return;
+      }
+      LoadFromString(state);
    }
-    var state = _jsonCacheManager.GetObject(key);
-    LoadFromString(state);
  }
 }
@@ -120,14 +120,9 @@ public class RevitMaterialBaker

      try
      {
-        // all values assumed to be on the 0 - 1 scale need to pass through this validation and logging (if assumption wrong)
-        double roughness = ClampToUnitRange(speckleRenderMaterial.roughness, "roughness", speckleRenderMaterial.name);
-        double opacity = ClampToUnitRange(speckleRenderMaterial.opacity, "opacity", speckleRenderMaterial.name);
-        double metalness = ClampToUnitRange(speckleRenderMaterial.metalness, "metalness", speckleRenderMaterial.name);
-
        var diffuse = System.Drawing.Color.FromArgb(speckleRenderMaterial.diffuse);
-        double transparency = 1 - opacity;
-        double smoothness = 1 - roughness;
+        double transparency = 1 - speckleRenderMaterial.opacity;
+        double smoothness = 1 - speckleRenderMaterial.roughness;
        string materialId = speckleRenderMaterial.applicationId ?? speckleRenderMaterial.id.NotNull();
        string matName = _revitUtils.RemoveInvalidChars($"{speckleRenderMaterial.name}-({materialId})-{baseLayerName}");

@@ -135,7 +130,7 @@ public class RevitMaterialBaker
        var revitMaterial = (Material)_converterSettings.Current.Document.GetElement(newMaterialId);
        revitMaterial.Color = new Color(diffuse.R, diffuse.G, diffuse.B);
        revitMaterial.Transparency = (int)(transparency * 100);
-        revitMaterial.Shininess = (int)(metalness * 128);
+        revitMaterial.Shininess = (int)(speckleRenderMaterial.metalness * 128);
        revitMaterial.Smoothness = (int)(smoothness * 128);

        foreach (var objectId in proxy.objects)
@@ -168,30 +163,4 @@ public class RevitMaterialBaker
      document.Delete(materialIds);
    }
  }
-
-  /// <summary>
-  /// After CNX-2661, we've seen some edge cases contradicting the expected 0 - 1 range for PRB properties.
-  /// Defensively, we'd rather clamp these values than throw.
-  /// </summary>
-  /// <remarks>
-  /// Created a method so that we can extend the checks to any numerical value potentially leading to a negative value,
-  /// which would throw an exception. Generalised method since Math.Clamp() only available since C# 8.0 and this method
-  /// handles logging (in the hope that we can get a better feel for these "weird" models, e.g. 0 - 100 scale??)
-  /// </remarks>
-  private double ClampToUnitRange(double value, string propertyName, string materialName)
-  {
-    if (value is < 0 or > 1)
-    {
-      _logger.LogWarning(
-        "Material '{MaterialName}' has an invalid {PropertyName} value of {Value} and was clamped to 0 - 1 range",
-        materialName,
-        propertyName,
-        value
-      );
-
-      value = Math.Min(Math.Max(0, value), 1);
-    }
-
-    return value;
-  }
 }
@@ -1,87 +0,0 @@
-using Autodesk.Revit.DB;
-using Microsoft.Extensions.Logging;
-using Speckle.Objects.Other;
-using Speckle.Sdk;
-
-namespace Speckle.Connectors.Revit.HostApp;
-
-/// <summary>
-/// Unpacks Revit Views for sending
-/// </summary>
-
-public class ViewUnpacker
-{
-  private readonly ILogger<ViewUnpacker> _logger;
-  private readonly Converters.Common.IRootToSpeckleConverter _rootToSpeckleConverter;
-
-  public ViewUnpacker(Converters.Common.IRootToSpeckleConverter rootToSpeckleConverter, ILogger<ViewUnpacker> logger)
-  {
-    _rootToSpeckleConverter = rootToSpeckleConverter;
-    _logger = logger;
-  }
-
-  private Camera? ConvertViewToCamera(View3D view)
-  {
-    try
-    {
-      var converted = (Camera)_rootToSpeckleConverter.Convert(view);
-      if (converted is null)
-      {
-        _logger.LogError("Failed to create a view from {view}", view.Name);
-        return null;
-      }
-
-      return converted;
-    }
-    catch (Exception ex) when (!ex.IsFatal())
-    {
-      _logger.LogError(ex, "Failed to create a view from {view}", view.Name);
-      return null;
-    }
-  }
-
-  /// <summary>
-  /// Iterates through the 3D views in the provided document to create cameras
-  /// </summary>
-  /// <param name="doc">Document to retrieve 3D views from</param>
-  /// <returns></returns>
-  public List<Camera> Unpack(Document doc)
-  {
-    List<Camera> cameras = new();
-    using FilteredElementCollector collector = new(doc);
-    List<View> views = collector
-      .WhereElementIsNotElementType()
-      .OfCategory(BuiltInCategory.OST_Views)
-      .Cast<View>()
-      .Where(x => x.ViewType == ViewType.ThreeD)
-      .ToList();
-
-    foreach (View view in views)
-    {
-      if (view is not View3D view3D)
-      {
-        continue;
-      }
-
-      // not supporting parallel project yet, since it is too complex to match in the viewer for now
-      try
-      {
-        if (!view3D.IsPerspective)
-        {
-          continue;
-        }
-      }
-      catch (Autodesk.Revit.Exceptions.InvalidOperationException)
-      {
-        continue; // some threed views will throw an exception: returns true if view is not a view template
-      }
-
-      if (ConvertViewToCamera(view3D) is Camera camera)
-      {
-        cameras.Add(camera);
-      }
-    }
-
-    return cameras;
-  }
-}
@@ -66,8 +66,8 @@ public sealed class RevitHostObjectBuilder(
    // TODO: formalise getting transform info from rootObject. this dict access is gross.
    Autodesk.Revit.DB.Transform? referencePointTransformFromRootObject = null;
    if (
-      rootObject.DynamicPropertyKeys.Contains(RootKeys.REFERENCE_POINT_TRANSFORM)
-      && rootObject[RootKeys.REFERENCE_POINT_TRANSFORM] is Dictionary<string, object> transformDict
+      rootObject.DynamicPropertyKeys.Contains(ReferencePointHelper.REFERENCE_POINT_TRANSFORM_KEY)
+      && rootObject[ReferencePointHelper.REFERENCE_POINT_TRANSFORM_KEY] is Dictionary<string, object> transformDict
      && transformDict.TryGetValue("transform", out var transformValue)
    )
    {
@@ -110,8 +110,7 @@ public sealed class RevitHostObjectBuilder(
    // TODO: TransformTo and material baking needs to be fixed in Revit!!

    // create a mapping from original to modified IDs <- so that we can actually map ids in the proxies to the objects
-    // as part of CNX-2677, we have a one-to-many problem. many instances share the same reference, so we use a list
-    Dictionary<string, List<string>> originalToModifiedIds = new();
+    Dictionary<string, string> originalToModifiedIds = new();

    // modify application IDs BEFORE material baking
    foreach (LocalToGlobalMap localToGlobalMap in localToGlobalMaps)
@@ -140,13 +139,7 @@ public sealed class RevitHostObjectBuilder(
        string modifiedAppId = $"{originalAppId}_{Guid.NewGuid().ToString("N")[..8]}";
        if (originalAppId != null)
        {
-          if (!originalToModifiedIds.TryGetValue(originalAppId, out List<string>? modifiedIds))
-          {
-            modifiedIds = new List<string>();
-            originalToModifiedIds[originalAppId] = modifiedIds;
-          }
-
-          modifiedIds.Add(modifiedAppId);
+          originalToModifiedIds[originalAppId] = modifiedAppId;
        }

        localToGlobalMap.AtomicObject.applicationId = modifiedAppId;
@@ -159,20 +152,14 @@ public sealed class RevitHostObjectBuilder(
    {
      foreach (var proxy in unpackedRoot.RenderMaterialProxies)
      {
-        var objectIdsToUse = new List<string>();
+        var updatedObjects = new List<string>();
        foreach (var objectId in proxy.objects)
        {
          // Use the modified ID if it exists, otherwise keep the original <- this SUCKS and we need to change
-          if (originalToModifiedIds.TryGetValue(objectId, out var modifiedIds))
-          {
-            objectIdsToUse.AddRange(modifiedIds);
-          }
-          else
-          {
-            objectIdsToUse.Add(objectId);
-          }
+          string idToUse = originalToModifiedIds.TryGetValue(objectId, out var modifiedId) ? modifiedId : objectId;
+          updatedObjects.Add(idToUse);
        }
-        proxy.objects = objectIdsToUse;
+        proxy.objects = updatedObjects;
      }
    }

@@ -11,13 +11,14 @@ namespace Speckle.Connectors.RevitShared.Operations.Send.Filters;
 public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilter
 {
  private RevitContext _revitContext;
+  private Document? _doc;
  public string Id { get; set; } = "revitViews";
  public string Name { get; set; } = "Views";
  public string Type { get; set; } = "Custom";
  public string? Summary { get; set; }
  public bool IsDefault { get; set; }
  public string? SelectedView { get; set; }
-  public List<string> SelectedObjectIds { get; set; } = new();
+  public List<string> SelectedObjectIds { get; set; }
  public Dictionary<string, string>? IdMap { get; set; } = new();
  public List<string>? AvailableViews { get; set; }

@@ -26,14 +27,12 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
  public RevitViewsFilter(RevitContext revitContext)
  {
    _revitContext = revitContext;
-    var doc = _revitContext.UIApplication?.ActiveUIDocument?.Document;
-    if (doc is not null)
-    {
-      GetViews(doc);
-    }
+    _doc = _revitContext.UIApplication?.ActiveUIDocument?.Document;
+
+    GetViews();
  }

-  public View? GetView(Document document)
+  public View? GetView()
  {
    if (SelectedView is null)
    {
@@ -43,7 +42,7 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
    var viewFamilyString = result[0];
    var viewString = result[1];

-    using var collector = new FilteredElementCollector(document);
+    using var collector = new FilteredElementCollector(_doc);
    return collector
      .OfClass(typeof(View))
      .Cast<View>()
@@ -57,8 +56,7 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
  /// <exception cref="SpeckleSendFilterException">Whenever no view is found.</exception>
  public List<string> RefreshObjectIds()
  {
-    var document = _revitContext.UIApplication?.ActiveUIDocument?.Document;
-    if (SelectedView is null || document is null)
+    if (SelectedView is null)
    {
      return [];
    }
@@ -68,7 +66,7 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
    var viewFamilyString = result[0];
    var viewString = result[1];

-    using var collector = new FilteredElementCollector(document);
+    using var collector = new FilteredElementCollector(_doc);
    View? view = collector
      .OfClass(typeof(View))
      .Cast<View>()
@@ -80,7 +78,7 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
      return [];
    }

-    IEnumerable<Element> elementsInView = GetFilteredElementsForView(document, view);
+    IEnumerable<Element> elementsInView = GetFilteredElementsForView(view);

    // NOTE: FilteredElementCollector() includes sweeps and reveals from a wall family's definition and includes them as additional objects
    // on this return. displayValue for Wall already includes these, therefore we end up with duplicate elements on wall sweeps
@@ -96,9 +94,9 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
    return objectIds;
  }

-  private void GetViews(Document document)
+  private void GetViews()
  {
-    using var collector = new FilteredElementCollector(document);
+    using var collector = new FilteredElementCollector(_doc);
    var views = collector
      .OfClass(typeof(View))
      .Cast<View>()
@@ -127,6 +125,7 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
  public void SetContext(RevitContext revitContext)
  {
    _revitContext = revitContext;
+    _doc = _revitContext.UIApplication?.ActiveUIDocument.Document;
  }

  // NOTE: Element collector returns parts and source elements even when Parts Visibility is set as "Show Parts" only.
@@ -162,9 +161,9 @@ public class RevitViewsFilter : DiscriminatedObject, ISendFilter, IRevitSendFilt
    return elementsToExclude;
  }

-  private IEnumerable<Element> GetFilteredElementsForView(Document document, View view)
+  private IEnumerable<Element> GetFilteredElementsForView(View view)
  {
-    using var viewCollector = new FilteredElementCollector(document, view.Id);
+    using var viewCollector = new FilteredElementCollector(_doc, view.Id);
    var allElements = viewCollector.ToElements();

    // parts filtering when view is set to show Parts only (and overwrites allElements)
@@ -24,7 +24,6 @@ public class RevitRootObjectBuilder(
  ISendConversionCache sendConversionCache,
  ElementUnpacker elementUnpacker,
  LevelUnpacker levelUnpacker,
-  ViewUnpacker viewUnpacker,
  IThreadContext threadContext,
  SendCollectionManager sendCollectionManager,
  ILogger<RevitRootObjectBuilder> logger,
@@ -42,11 +41,7 @@ public class RevitRootObjectBuilder(
      () => Task.FromResult(BuildSync(documentElementContexts, projectId, onOperationProgressed, ct))
    );

-#pragma warning disable CA1506
-#pragma warning disable CA1502
  private RootObjectBuilderResult BuildSync(
-#pragma warning restore CA1506
-#pragma warning restore CA1502
    IReadOnlyList<DocumentToConvert> documentElementContexts,
    string projectId,
    IProgress<CardProgress> onOperationProgressed,
@@ -60,9 +55,6 @@ public class RevitRootObjectBuilder(
      throw new SpeckleException("Family Environment documents are not supported.");
    }

-    // create a new send pipeline
-    using var sendPipeline = new Speckle.Sdk.Pipeline.Send();
-
    // init the root
    Collection rootObject =
      new() { name = converterSettings.Current.Document.PathName.Split('\\').Last().Split('.').First() };
@@ -191,12 +183,9 @@ public class RevitRootObjectBuilder(
            // non-transformed elements can safely rely on cache
            // TODO: Potential here to transform cached objects and NOT reconvert,
            // TODO: we wont do !hasTransform here, and re-set application id before this
-            bool wasCached = false;
            if (!hasTransform && sendConversionCache.TryGetValue(projectId, applicationId, out ObjectReference? value))
            {
-              // TODO: cahce hit
              converted = value;
-              wasCached = true;
              cacheHitCount++;
            }
            // not in cache means we convert
@@ -215,12 +204,6 @@ public class RevitRootObjectBuilder(
              converted.applicationId = applicationId;
            }

-            var reference = sendPipeline.Process(converted).Result; // .Wait(cancellationToken);//.ConfigureAwait(false);
-            if (!wasCached)
-            {
-              sendConversionCache.AppendSendResult(projectId, applicationId, reference);
-            }
-
            var collection = sendCollectionManager.GetAndCreateObjectHostCollection(
              revitElement,
              rootObject,
@@ -228,7 +211,7 @@ public class RevitRootObjectBuilder(
              modelDisplayName
            );

-            collection.elements.Add(reference);
+            collection.elements.Add(converted);
            results.Add(new(Status.SUCCESS, applicationId, sourceType, converted));
          }
          catch (Exception ex) when (!ex.IsFatal())
@@ -256,7 +239,6 @@ public class RevitRootObjectBuilder(
      throw new SpeckleException("Failed to convert all objects.");
    }

-    // STEP 5: Unpack proxies to attach to root collection
    var flatElements = atomicObjectsByDocumentAndTransform.SelectMany(t => t.Elements).ToList();
    var idsAndSubElementIds = elementUnpacker.GetElementsAndSubelementIdsFromAtomicObjects(flatElements);

@@ -266,31 +248,6 @@ public class RevitRootObjectBuilder(
    var levelProxies = levelUnpacker.Unpack(flatElements);
    rootObject[ProxyKeys.LEVEL] = levelProxies;

-    rootObject[ProxyKeys.INSTANCE_DEFINITION] = revitToSpeckleCacheSingleton.GetInstanceDefinitionProxiesForObjects(
-      idsAndSubElementIds
-    );
-    // NOTE: i might be overdoing things in here, but tldr:
-    // - all instance objects (meshes) are processed individually
-    // - process their collection individually, and then attach it to the root collection
-    // we could, theoretically, just process the collection as a whole (but it can be big?)
-    // note/ask: do these need to go in the conversion cache? or not?
-    var instanceObjects = revitToSpeckleCacheSingleton.GetBaseObjectsForObjects(idsAndSubElementIds);
-    var instanceReferences = new Collection("revitInstancedObjects");
-    foreach (var instanceObject in instanceObjects)
-    {
-      var referenceInstanceObject = sendPipeline.Process(instanceObject).Result;
-      instanceReferences.elements.Add(referenceInstanceObject);
-    }
-    var instanceReferenceCollection = sendPipeline.Process(instanceReferences).Result;
-    rootObject.elements.Add(instanceReferenceCollection);
-
-    // STEP 6: Unpack all other objects to attach to root collection
-    List<Objects.Other.Camera> views = viewUnpacker.Unpack(converterSettings.Current.Document);
-    if (views.Count > 0)
-    {
-      rootObject[RootKeys.VIEW] = views;
-    }
-
    // NOTE: these are currently not used anywhere, we'll skip them until someone calls for it back
    // rootObject[ProxyKeys.PARAMETER_DEFINITIONS] = _parameterDefinitionHandler.Definitions;

@@ -298,13 +255,9 @@ public class RevitRootObjectBuilder(
    if (converterSettings.Current.ReferencePointTransform is Transform transform)
    {
      var transformMatrix = ReferencePointHelper.CreateTransformDataForRootObject(transform);
-      rootObject[RootKeys.REFERENCE_POINT_TRANSFORM] = transformMatrix;
+      rootObject[ReferencePointHelper.REFERENCE_POINT_TRANSFORM_KEY] = transformMatrix;
    }

-    // NOTE: could be
-    sendPipeline.Process(rootObject).Wait(cancellationToken);
-    sendPipeline.WaitForUpload().Wait(cancellationToken);
-
-    return new RootObjectBuilderResult(new Collection() { name = "ignore" }, results);
+    return new RootObjectBuilderResult(rootObject, results);
  }
 }
@@ -1,21 +1,25 @@
 using Autodesk.Revit.DB;
+using Autodesk.Revit.UI;
 using Microsoft.Extensions.Logging;
 using Speckle.Connectors.Common.Caching;
 using Speckle.Connectors.DUI.Models.Card;
 using Speckle.Connectors.Revit.HostApp;
+using Speckle.Converters.RevitShared.Helpers;
 using Speckle.Converters.RevitShared.Settings;
 using Speckle.InterfaceGenerator;
+using Speckle.Sdk;
 using Speckle.Sdk.Common;

 namespace Speckle.Connectors.Revit.Operations.Send.Settings;

 [GenerateAutoInterface]
-public class ToSpeckleSettingsManager(
-  ISendConversionCache sendConversionCache,
-  ElementUnpacker elementUnpacker,
-  ILogger<ToSpeckleSettingsManager> logger
-) : IToSpeckleSettingsManager
+public class ToSpeckleSettingsManager : IToSpeckleSettingsManager
 {
+  private readonly RevitContext _revitContext;
+  private readonly ISendConversionCache _sendConversionCache;
+  private readonly ElementUnpacker _elementUnpacker;
+  private readonly ILogger<ToSpeckleSettingsManager> _logger;
+
  // cache invalidation process run with ModelCardId since the settings are model specific
  private readonly Dictionary<string, DetailLevelType> _detailLevelCache = [];
  private readonly Dictionary<string, Transform?> _referencePointCache = [];
@@ -23,7 +27,20 @@ public class ToSpeckleSettingsManager(
  private readonly Dictionary<string, bool?> _sendLinkedModelsCache = [];
  private readonly Dictionary<string, bool?> _sendRebarsAsVolumetricCache = [];

-  public DetailLevelType GetDetailLevelSetting(Document document, SenderModelCard modelCard)
+  public ToSpeckleSettingsManager(
+    RevitContext revitContext,
+    ISendConversionCache sendConversionCache,
+    ElementUnpacker elementUnpacker,
+    ILogger<ToSpeckleSettingsManager> logger
+  )
+  {
+    _revitContext = revitContext;
+    _elementUnpacker = elementUnpacker;
+    _sendConversionCache = sendConversionCache;
+    _logger = logger;
+  }
+
+  public DetailLevelType GetDetailLevelSetting(SenderModelCard modelCard)
  {
    var fidelityString =
      modelCard.Settings?.FirstOrDefault(s => s.Id == DetailLevelSetting.SETTING_ID)?.Value as string;
@@ -36,7 +53,7 @@ public class ToSpeckleSettingsManager(
      {
        if (previousType != fidelity)
        {
-          EvictCacheForModelCard(document, modelCard);
+          EvictCacheForModelCard(modelCard);
        }
      }
      _detailLevelCache[modelCard.ModelCardId.NotNull()] = fidelity;
@@ -44,7 +61,7 @@ public class ToSpeckleSettingsManager(
    }

    // log the issue
-    logger.LogWarning(
+    _logger.LogWarning(
      "Invalid detail level setting received: '{FidelityString}' for model {ModelCardId}, using default: {DefaultValue}",
      fidelityString,
      modelCard.ModelCardId,
@@ -57,7 +74,7 @@ public class ToSpeckleSettingsManager(
    return defaultValue;
  }

-  public Transform? GetReferencePointSetting(Document document, ModelCard modelCard)
+  public Transform? GetReferencePointSetting(ModelCard modelCard)
  {
    var referencePointString =
      modelCard.Settings?.FirstOrDefault(s => s.Id == SendReferencePointSetting.SETTING_ID)?.Value as string;
@@ -71,14 +88,14 @@ public class ToSpeckleSettingsManager(
    {
      // get the current transform from setting first
      // we are doing this because we can't track if reference points were changed between send operations.
-      Transform? currentTransform = GetTransform(document, referencePoint);
+      Transform? currentTransform = GetTransform(referencePoint);

      if (_referencePointCache.TryGetValue(modelCard.ModelCardId.NotNull(), out Transform? previousTransform))
      {
        // invalidate conversion cache if the transform has changed
        if (modelCard is SenderModelCard senderModelCard && previousTransform != currentTransform)
        {
-          EvictCacheForModelCard(document, senderModelCard);
+          EvictCacheForModelCard(senderModelCard);
        }
      }

@@ -87,7 +104,7 @@ public class ToSpeckleSettingsManager(
    }

    // log the issue
-    logger.LogWarning(
+    _logger.LogWarning(
      "Invalid reference point setting received: '{ReferencePointString}' for model {ModelCardId}, using default: {DefaultValue}",
      referencePointString,
      modelCard.ModelCardId,
@@ -99,9 +116,8 @@ public class ToSpeckleSettingsManager(
    return null;
  }

-  public bool GetSendParameterNullOrEmptyStringsSetting(Document document, SenderModelCard modelCard) =>
+  public bool GetSendParameterNullOrEmptyStringsSetting(SenderModelCard modelCard) =>
    GetBooleanSettingWithCache(
-      document,
      SendParameterNullOrEmptyStringsSetting.SETTING_ID,
      SendParameterNullOrEmptyStringsSetting.DEFAULT_VALUE,
      modelCard,
@@ -111,9 +127,8 @@ public class ToSpeckleSettingsManager(

  // NOTE: Cache invalidation currently a placeholder until we have more understanding on the sends
  // TODO: Evaluate cache invalidation for GetLinkedModelsSetting
-  public bool GetLinkedModelsSetting(Document document, SenderModelCard modelCard) =>
+  public bool GetLinkedModelsSetting(SenderModelCard modelCard) =>
    GetBooleanSettingWithCache(
-      document,
      LinkedModelsSetting.SETTING_ID,
      LinkedModelsSetting.DEFAULT_VALUE,
      modelCard,
@@ -121,9 +136,8 @@ public class ToSpeckleSettingsManager(
      "Linked models"
    );

-  public bool GetSendRebarsAsVolumetric(Document document, SenderModelCard modelCard) =>
+  public bool GetSendRebarsAsVolumetric(SenderModelCard modelCard) =>
    GetBooleanSettingWithCache(
-      document,
      SendRebarsAsVolumetricSetting.SETTING_ID,
      SendRebarsAsVolumetricSetting.DEFAULT_VALUE,
      modelCard,
@@ -135,7 +149,6 @@ public class ToSpeckleSettingsManager(
  /// Helper method to handle boolean settings with caching and logging
  /// </summary>
  private bool GetBooleanSettingWithCache(
-    Document document,
    string settingId,
    bool defaultValue,
    SenderModelCard modelCard,
@@ -150,7 +163,7 @@ public class ToSpeckleSettingsManager(
    {
      if (previousValue != returnValue)
      {
-        EvictCacheForModelCard(document, modelCard);
+        EvictCacheForModelCard(modelCard);
      }
    }

@@ -160,7 +173,7 @@ public class ToSpeckleSettingsManager(
    // respected (linked models disabled but still sent linked models), I think we should note this occurence so we know
    if (settingValue == null)
    {
-      logger.LogWarning(
+      _logger.LogWarning(
        "{SettingName} setting was null for model {ModelCardId}, using default: {DefaultValue}",
        settingName,
        modelCard.ModelCardId,
@@ -171,59 +184,71 @@ public class ToSpeckleSettingsManager(
    return returnValue;
  }

-  private void EvictCacheForModelCard(Document document, SenderModelCard modelCard)
+  private void EvictCacheForModelCard(SenderModelCard modelCard)
  {
-    var objectIds = modelCard.SendFilter?.SelectedObjectIds ?? [];
-    var unpackedObjectIds = elementUnpacker.GetUnpackedElementIds(objectIds, document);
-    sendConversionCache.EvictObjects(unpackedObjectIds);
+    var doc = _revitContext.UIApplication?.ActiveUIDocument?.Document;
+    if (doc == null)
+    {
+      throw new SpeckleException("Unable to retrieve active UI document");
+    }
+    var objectIds = modelCard.SendFilter != null ? modelCard.SendFilter.NotNull().SelectedObjectIds : [];
+    var unpackedObjectIds = _elementUnpacker.GetUnpackedElementIds(objectIds, doc);
+    _sendConversionCache.EvictObjects(unpackedObjectIds);
  }

-  private Transform? GetTransform(Document document, ReferencePointType referencePointType)
+  private Transform? GetTransform(ReferencePointType referencePointType)
  {
    Transform? referencePointTransform = null;

-    // first get the main doc base points and reference setting transform
-    using FilteredElementCollector filteredElementCollector = new(document);
-    var points = filteredElementCollector.OfClass(typeof(BasePoint)).Cast<BasePoint>().ToList();
-    BasePoint? projectPoint = points.FirstOrDefault(o => !o.IsShared);
-    BasePoint? surveyPoint = points.FirstOrDefault(o => o.IsShared);
-
-    switch (referencePointType)
+    if (_revitContext.UIApplication is UIApplication uiApplication)
    {
-      // note that the project base (ui) rotation is registered on the survey pt, not on the base point
-      case ReferencePointType.ProjectBase:
-        if (projectPoint is not null)
-        {
-          referencePointTransform = Transform.CreateTranslation(projectPoint.Position);
-        }
-        else
-        {
-          throw new InvalidOperationException("Couldn't retrieve Project Point from document");
-        }
-        break;
+      // first get the main doc base points and reference setting transform
+      using FilteredElementCollector filteredElementCollector = new(uiApplication.ActiveUIDocument.Document);
+      var points = filteredElementCollector.OfClass(typeof(BasePoint)).Cast<BasePoint>().ToList();
+      BasePoint? projectPoint = points.FirstOrDefault(o => !o.IsShared);
+      BasePoint? surveyPoint = points.FirstOrDefault(o => o.IsShared);

-      // note that the project base (ui) rotation is registered on the survey pt, not on the base point
-      case ReferencePointType.Survey:
-        if (surveyPoint is not null && projectPoint is not null)
-        {
-          // POC: should a null angle resolve to 0?
-          // retrieve the survey point rotation from the project point
-          var angle = projectPoint.get_Parameter(BuiltInParameter.BASEPOINT_ANGLETON_PARAM)?.AsDouble() ?? 0;
+      switch (referencePointType)
+      {
+        // note that the project base (ui) rotation is registered on the survey pt, not on the base point
+        case ReferencePointType.ProjectBase:
+          if (projectPoint is not null)
+          {
+            referencePointTransform = Transform.CreateTranslation(projectPoint.Position);
+          }
+          else
+          {
+            throw new InvalidOperationException("Couldn't retrieve Project Point from document");
+          }
+          break;

-          // POC: following disposed incorrectly or early or maybe a false negative?
-          using Transform translation = Transform.CreateTranslation(surveyPoint.Position);
-          referencePointTransform = translation.Multiply(Transform.CreateRotation(XYZ.BasisZ, angle));
-        }
-        else
-        {
-          throw new InvalidOperationException("Couldn't retrieve Survey and Project Point from document");
-        }
-        break;
+        // note that the project base (ui) rotation is registered on the survey pt, not on the base point
+        case ReferencePointType.Survey:
+          if (surveyPoint is not null && projectPoint is not null)
+          {
+            // POC: should a null angle resolve to 0?
+            // retrieve the survey point rotation from the project point
+            var angle = projectPoint.get_Parameter(BuiltInParameter.BASEPOINT_ANGLETON_PARAM)?.AsDouble() ?? 0;

-      case ReferencePointType.InternalOrigin:
-        break;
+            // POC: following disposed incorrectly or early or maybe a false negative?
+            using Transform translation = Transform.CreateTranslation(surveyPoint.Position);
+            referencePointTransform = translation.Multiply(Transform.CreateRotation(XYZ.BasisZ, angle));
+          }
+          else
+          {
+            throw new InvalidOperationException("Couldn't retrieve Survey and Project Point from document");
+          }
+          break;
+
+        case ReferencePointType.InternalOrigin:
+          break;
+      }
+
+      return referencePointTransform;
    }

-    return referencePointTransform;
+    throw new InvalidOperationException(
+      "Revit Context UI Application was null when retrieving reference point transform."
+    );
  }
 }
@@ -24,7 +24,6 @@
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\LevelUnpacker.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\LinkedModelHandler.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\RevitMaterialBaker.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)HostApp\ViewUnpacker.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\SupportedCategoriesUtils.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\RevitViewManager.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Receive\HideWarningsFailuresPreprocessor.cs" />
@@ -61,4 +60,4 @@
    <Compile Include="$(MSBuildThisFileDirectory)Plugin\RevitCefPlugin.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Plugin\SpeckleRevitTaskException.cs" />
  </ItemGroup>
-</Project>
+</Project>
@@ -202,27 +202,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -346,8 +325,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.logging": {
@@ -357,7 +337,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.rhino7": {
@@ -402,12 +382,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -29,8 +29,8 @@

  <ItemGroup>
    <PackageReference Include="GrasshopperAsyncComponent" />
-    <PackageReference Include="RhinoCommon" IncludeAssets="compile; build" PrivateAssets="all" VersionOverride="8.9.24194.18121"/>
-    <PackageReference Include="Grasshopper" IncludeAssets="compile; build" PrivateAssets="all" VersionOverride="8.9.24194.18121"/>
+    <PackageReference Include="RhinoCommon" IncludeAssets="compile; build" PrivateAssets="all" />
+    <PackageReference Include="Grasshopper" IncludeAssets="compile; build" PrivateAssets="all" />
    <PackageReference Include="System.Resources.Extensions" />
  </ItemGroup>

@@ -202,27 +202,6 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
-      "Speckle.Sdk": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "D04pCdleqLeDxthANCb8+X1xfEYr4+Q3GTuHtqOrMQeGHDAVPc5G3M0D6VYEUYbLYav0NBZ6tNuWO2Y/fqfWSw==",
-        "dependencies": {
-          "GraphQL.Client": "6.0.0",
-          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
-          "Microsoft.CSharp": "4.7.0",
-          "Microsoft.Data.Sqlite": "7.0.5",
-          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
-          "Microsoft.Extensions.Logging": "2.2.0",
-          "Speckle.DoubleNumerics": "4.1.0",
-          "Speckle.Newtonsoft.Json": "13.0.2",
-          "Speckle.Sdk.Dependencies": "3.11.1"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "Transitive",
-        "resolved": "3.11.1",
-        "contentHash": "u8lJ+ECslmVPsn4yOCg3hAzj3zh6r+gp2oQh8RDGn22NihIPOsMhBFvoBruL1QVhXdJcS4rI2J6VEAbdvL9FRg=="
-      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -346,8 +325,9 @@
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
-          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )",
+          "Speckle.Sdk": "[3.5.4, )",
+          "Speckle.Sdk.Dependencies": "[3.5.4, )"
        }
      },
      "speckle.connectors.logging": {
@@ -357,7 +337,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.11.1, )"
+          "Speckle.Objects": "[3.5.4, )"
        }
      },
      "speckle.converters.rhino8": {
@@ -401,12 +381,35 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.11.1, )",
-        "resolved": "3.11.1",
-        "contentHash": "JUCY3bA6Pa+fa6wZV9uQ9mhLRihvICkF58nIr28Yi94j0th7wSg4l8WeThl3ubKVnHDQE5mdVffVlY1e5ZUkuQ==",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o7ex4+yHJYI8pJbsjNqw+D8r8WjkBoB5aK/GQlGJd/0zydrPxN4SMKS4arpRBR3CUD6JhtQMatScXZOrslGXQg==",
        "dependencies": {
-          "Speckle.Sdk": "3.11.1"
+          "Speckle.Sdk": "3.5.4"
        }
+      },
+      "Speckle.Sdk": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "o4bEJTz+OBI1koy9xqXSIq3UtUFCKtk6Btg82rdVM2aFMPT3ZoYVarG+ylPcUOHd684XpgGASxE6dIgXz2pvng==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.Bcl.AsyncInterfaces": "5.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
+          "Speckle.Newtonsoft.Json": "13.0.2",
+          "Speckle.Sdk.Dependencies": "3.5.4"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "CentralTransitive",
+        "requested": "[3.5.4, )",
+        "resolved": "3.5.4",
+        "contentHash": "d0ZOHiK11Hq9r7YEkfTvVu33ygWtsrgysIWdCRAz6rdlcAgMCEkWVBoe3jDjxdmUy20TToaQlFKfMH4hTyzWXg=="
      }
    }
  }
@@ -47,11 +47,6 @@ public class CollectionPathsSelector : ValueSet<IGH_Goo>
      // note: we are skipping the input collection, to make the output paths more intuitive
      foreach (var element in wrapper.Elements)
      {
-        if (element is null)
-        {
-          continue; // skip nulls (CNX-2855)
-        }
-
        if (element is SpeckleCollectionWrapper childCollectionWrapper)
        {
          paths.AddRange(GetPaths(childCollectionWrapper));
@@ -75,15 +70,11 @@ public class CollectionPathsSelector : ValueSet<IGH_Goo>
    void GetPathsInternal(SpeckleCollectionWrapper w)
    {
      currentPath.Add(w.Name);
-      var subCols = w
-        .Elements.Where(e => e != null) // skip nulls (CNX-2855)
-        .OfType<SpeckleCollectionWrapper>()
-        .ToList();
+      var subCols = w.Elements.OfType<SpeckleCollectionWrapper>().ToList();

      // NOTE: here we're basically outputting only paths that correspond to a collection
      // that has values inside of it.
-      var nonNullElementCount = w.Elements.Count(e => e != null);
-      if (subCols.Count != nonNullElementCount)
+      if (subCols.Count != w.Elements.Count)
      {
        allPaths.Add(string.Join(Constants.LAYER_PATH_DELIMITER, currentPath));
      }
@@ -48,7 +48,6 @@ public class CreateCollection : VariableParameterComponentBase
  protected override void SolveInstance(IGH_DataAccess dataAccess)
  {
    var rootCollection = CreateRootCollection();
-    bool hasAnyInput = false;

    foreach (var inputParam in Params.Input)
    {
@@ -58,7 +57,6 @@ public class CreateCollection : VariableParameterComponentBase
        continue;
      }

-      hasAnyInput = true;
      var childCollection = ProcessInputParameter(inputParam, data, rootCollection.Name);
      if (childCollection != null)
      {
@@ -66,46 +64,12 @@ public class CreateCollection : VariableParameterComponentBase
      }
    }

-    // Skip validation if no input provided
-    if (!hasAnyInput)
-    {
-      return;
-    }
-
-    // validate for duplicate application IDs across the entire collection hierarchy
-    if (HasDuplicateApplicationIds(rootCollection))
-    {
-      AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "The same object(s) cannot appear in multiple collections");
-      return;
-    }
-
-    // validate collection isn't empty (CNX-2855)
-    if (rootCollection.Elements.Count == 0 || !rootCollection.Elements.Any(HasAnyValidContent))
-    {
-      AddRuntimeMessage(
-        GH_RuntimeMessageLevel.Error,
-        "Collection contains no valid geometry. All input objects are unsupported types."
-      );
-      return;
-    }
-
    dataAccess.SetData(0, new SpeckleCollectionWrapperGoo(rootCollection));
  }

-  /// <summary>
-  /// Recursively checks if collection or any descendants contain valid geometry/data objects
-  /// </summary>
-  private bool HasAnyValidContent(ISpeckleCollectionObject? element) =>
-    element switch
-    {
-      SpeckleGeometryWrapper => true,
-      SpeckleDataObjectWrapper => true,
-      SpeckleCollectionWrapper collection => collection.Elements.Any(HasAnyValidContent),
-      _ => false
-    };
-
-  private SpeckleCollectionWrapper CreateRootCollection() =>
-    new()
+  private SpeckleCollectionWrapper CreateRootCollection()
+  {
+    return new SpeckleCollectionWrapper
    {
      Base = new Collection(),
      Name = "Unnamed",
@@ -114,6 +78,7 @@ public class CreateCollection : VariableParameterComponentBase
      Material = null,
      ApplicationId = InstanceGuid.ToString()
    };
+  }

  private SpeckleCollectionWrapper? ProcessInputParameter(IGH_Param inputParam, List<IGH_Goo> data, string rootName)
  {
@@ -168,10 +133,7 @@ public class CreateCollection : VariableParameterComponentBase

      // Check for duplicate names within this collection
      foreach (
-        var subCollectionName in collectionGoo
-          .Value.Elements.Where(e => e != null) // skip nulls (CNX-2855)
-          .OfType<SpeckleCollectionWrapper>()
-          .Select(c => c.Name)
+        var subCollectionName in collectionGoo.Value.Elements.OfType<SpeckleCollectionWrapper>().Select(c => c.Name)
      )
      {
        if (!duplicateNames.Add(subCollectionName))
@@ -194,8 +156,6 @@ public class CreateCollection : VariableParameterComponentBase
    List<string> childPath
  )
  {
-    int skippedCount = 0;
-
    foreach (var obj in objects)
    {
      // handle data objects directly (deep copy to avoid mutations)
@@ -217,68 +177,7 @@ public class CreateCollection : VariableParameterComponentBase
      }
      else
      {
-        // add null placeholder to preserve topology (CNX-2855)
-        parentCollection.Elements.Add(null);
-        skippedCount++;
-      }
-    }
-
-    // add warning if objects were skipped (CNX-2855)
-    if (skippedCount > 0)
-    {
-      AddRuntimeMessage(
-        GH_RuntimeMessageLevel.Warning,
-        $"Skipped {skippedCount} unsupported object(s) (Leaders, TextDots, Dimensions, etc.)"
-      );
-    }
-  }
-
-  /// <summary>
-  /// Validates that all application IDs are unique across the entire collection hierarchy.
-  /// Shows an error if duplicates are found, indicating objects appear in multiple collections.
-  /// </summary>
-  /// <returns>True if duplicates exist, false if all IDs are unique</returns>
-  private bool HasDuplicateApplicationIds(SpeckleCollectionWrapper rootCollection)
-  {
-    // args to CheckForDuplicateApplicationIds passed in since the method can recursively check
-    var seenIds = new HashSet<string>();
-    var duplicateIds = new HashSet<string>();
-
-    // iterate, create hash set and check all application IDs
-    ProcessAndCheckForDuplicateApplicationIds(rootCollection, seenIds, duplicateIds);
-
-    return duplicateIds.Count > 0;
-  }
-
-  /// <summary>
-  /// Recursively collects application IDs from all in the collection hierarchy.
-  /// </summary>
-  /// <remarks>
-  /// Only checks the wrapper's ApplicationId, not for example geometries within DataObjects.
-  /// </remarks>
-  private void ProcessAndCheckForDuplicateApplicationIds(
-    SpeckleCollectionWrapper collection,
-    HashSet<string> seenIds,
-    HashSet<string> duplicateIds
-  )
-  {
-    foreach (var element in collection.Elements)
-    {
-      switch (element)
-      {
-        case null:
-          break; // skip nulls (CNX-2855)
-        case SpeckleCollectionWrapper childCollection:
-          // recurse into child collections
-          ProcessAndCheckForDuplicateApplicationIds(childCollection, seenIds, duplicateIds);
-          break;
-
-        case SpeckleWrapper wrapper:
-          if (wrapper.ApplicationId != null && !seenIds.Add(wrapper.ApplicationId))
-          {
-            duplicateIds.Add(wrapper.ApplicationId);
-          }
-          break;
+        AddRuntimeMessage(GH_RuntimeMessageLevel.Remark, $"{obj?.GetType().Name} type cannot be added to collections.");
      }
    }
  }
@@ -51,14 +51,11 @@ public class ExpandCollection : GH_Component, IGH_VariableParameterComponent
    Name = wrapper.Name;
    NickName = wrapper.Name;

-    // Separate objects and collections (skip nulls for non-topology outputs)
+    // Separate objects and collections
    // Note: SpeckleBlockInstanceWrapper inherits from SpeckleObjectWrapper,
    // so it will be included in objects
    List<SpeckleWrapper> objects = wrapper.GetAtomicObjects().ToList();
-    List<SpeckleCollectionWrapper> collections = wrapper
-      .Elements.Where(e => e != null)
-      .OfType<SpeckleCollectionWrapper>()
-      .ToList();
+    List<SpeckleCollectionWrapper> collections = wrapper.Elements.OfType<SpeckleCollectionWrapper>().ToList();

    var outputParams = new List<OutputParamWrapper>();
    if (objects.Count != 0)
@@ -72,14 +69,22 @@ public class ExpandCollection : GH_Component, IGH_VariableParameterComponent
        Access = GH_ParamAccess.list
      };

-      // Don't use topology for _objects output (always list)
+      // Create appropriate Goo types for each object (downside of the inheritance refactor)
      List<IGH_Goo> atomicObjectGoos = objects.Select(obj => obj.CreateGoo()).ToList();
+
      outputParams.Add(new OutputParamWrapper(param, atomicObjectGoos, null));
    }

    foreach (SpeckleCollectionWrapper childWrapper in collections)
    {
-      var hasInnerCollections = childWrapper.Elements.Where(e => e != null).Any(el => el is SpeckleCollectionWrapper);
+      /* POC: we shouldn't skip empty, people would probably expect to see what they see in browser.
+      if (childWrapper.Elements.Count == 0)
+      {
+        continue;
+      }
+      */
+
+      var hasInnerCollections = childWrapper.Elements.Any(el => el is SpeckleCollectionWrapper);
      var topology = childWrapper.Topology;
      var nickName = childWrapper.Name;
      if (nickName.Length > 16)
@@ -106,11 +111,8 @@ public class ExpandCollection : GH_Component, IGH_VariableParameterComponent
      }
      else
      {
-        // If topology exists, include nulls to match topology count (CNX-2855)
-        List<IGH_Goo> childObjectGoos =
-          topology != null
-            ? childWrapper.ToGooListWithNulls()
-            : childWrapper.GetAtomicObjects().Select(obj => obj.CreateGoo()).ToList();
+        // Create appropriate Goo types for child objects
+        List<IGH_Goo> childObjectGoos = childWrapper.GetAtomicObjects().Select(obj => obj.CreateGoo()).ToList();
        outputValue = childObjectGoos;
      }

@@ -115,7 +115,7 @@ public class DeconstructSpeckleParam : GH_Component, IGH_VariableParameterCompon
      SpeckleCollectionWrapperGoo collectionGoo when collectionGoo.Value != null
        => ParseSpeckleWrapper(
          collectionGoo.Value,
-          collectionGoo.Value.Elements.Select(o => ((SpeckleWrapper)o!).CreateGoo()).ToList()
+          collectionGoo.Value.Elements.Select(o => ((SpeckleWrapper)o).CreateGoo()).ToList()
        ),

      // get geometries from wrapper to override displayValue prop while parsing
@@ -15,7 +15,7 @@ public class TokenUrlComponent : GH_Component
 {
  public TokenUrlComponent()
    : base(
-      "Speckle Model URL with Token",
+      "Speckle Model URL",
      "URL",
      "Create a Speckle model link using URL and developer token",
      ComponentCategories.PRIMARY_RIBBON,
@@ -34,7 +34,8 @@ public class CreateSpeckleProperties : VariableParameterComponentBase
    pManager.AddParameter(param);
  }

-  protected override void RegisterOutputParams(GH_OutputParamManager pManager) =>
+  protected override void RegisterOutputParams(GH_OutputParamManager pManager)
+  {
    pManager.AddParameter(
      new SpecklePropertyGroupParam(),
      "Properties",
@@ -42,6 +43,7 @@ public class CreateSpeckleProperties : VariableParameterComponentBase
      "Properties for Speckle Objects",
      GH_ParamAccess.item
    );
+  }

  protected override void SolveInstance(IGH_DataAccess da)
  {
@@ -65,7 +67,8 @@ public class CreateSpeckleProperties : VariableParameterComponentBase
    {
      var paramName = Params.Input[i].NickName;

-      if (Params.Input[i].VolatileDataCount == 0)
+      var data = Params.Input[i].VolatileData.AllData(true).ToList();
+      if (data.Count == 0)
      {
        continue;
      }
@@ -162,12 +165,13 @@ public class CreateSpeckleProperties : VariableParameterComponentBase
      Params.RegisterInputParam(param);
    }

-    Params.OnParametersChanged();
    ExpireSolution(true);
  }

-  protected override void WriteComponentSpecificData(GH_IWriter writer) =>
+  protected override void WriteComponentSpecificData(GH_IWriter writer)
+  {
    writer.SetBoolean("CreateEmptyProperties", CreateEmptyProperties);
+  }

  protected override void ReadComponentSpecificData(GH_IReader reader)
  {
@@ -27,7 +27,8 @@ public class ExpandSpeckleProperties : GH_Component, IGH_VariableParameterCompon
  protected override Bitmap Icon => Resources.speckle_properties_expand;
  public override GH_Exposure Exposure => GH_Exposure.secondary;

-  protected override void RegisterInputParams(GH_InputParamManager pManager) =>
+  protected override void RegisterInputParams(GH_InputParamManager pManager)
+  {
    pManager.AddParameter(
      new SpecklePropertyGroupParam(),
      "Properties",
@@ -35,6 +36,7 @@ public class ExpandSpeckleProperties : GH_Component, IGH_VariableParameterCompon
      "Speckle Properties to expand",
      GH_ParamAccess.item
    );
+  }

  protected override void RegisterOutputParams(GH_OutputParamManager pManager) { }

@@ -89,7 +89,7 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent
  private List<int>? _outputFilterIndices;

  // Caches the list of all objects by geometrybase type
-  private readonly Dictionary<ObjectType, List<SpeckleGeometryWrapper>> _filterDict = [];
+  private readonly Dictionary<ObjectType, List<SpeckleGeometryWrapper>> _filterDict = new();

  protected override void SolveInstance(IGH_DataAccess dataAccess)
  {
@@ -104,9 +104,6 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent
    string path = "";
    dataAccess.GetData(1, ref path);

-    // ensure fresh data for type-specific outputs
-    _filterDict.Clear();
-
    // filter by collection path
    // Note: the collection paths selector will omit the target collection from the path of nested collections.
    // the discard ("_objects") will be used to indicate objects found directly in the target collection.
@@ -130,7 +127,10 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent

    // sort geometry objects by filters
    var geometryObjects = filteredObjects.OfType<SpeckleGeometryWrapper>().ToList();
-    SortObjectsByGeometryBaseType(geometryObjects);
+    if (_filterDict.Count == 0)
+    {
+      SortObjectsByGeometryBaseType(geometryObjects);
+    }

    // Set output objects
    for (int i = 0; i < Params.Output.Count; i++)
@@ -155,11 +155,10 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent

      var outputGoos = outputValues.Select(o => o.CreateGoo()).ToList();

+      // only use topology for the first output when we have a path
      if (i == 0 && targetCollectionWrapper?.Topology is string topology && !string.IsNullOrEmpty(topology))
      {
-        // include nulls to match topology count (CNX-2855)
-        var outputGoosWithNulls = targetCollectionWrapper.ToGooListWithNulls();
-        var tree = GrasshopperHelpers.CreateDataTreeFromTopologyAndItems(topology, outputGoosWithNulls);
+        var tree = GrasshopperHelpers.CreateDataTreeFromTopologyAndItems(topology, outputGoos);
        dataAccess.SetDataTree(i, tree);
      }
      else
@@ -174,13 +173,13 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent
  {
    if (_filterDict.Count > 0)
    {
-      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Stored input objects are in an invalid state");
+      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, $"Stored input objects are in an invalid state.");
      return;
    }

    foreach (ObjectType filter in Filters)
    {
-      _filterDict.Add(filter, []);
+      _filterDict.Add(filter, new());
    }

    foreach (var wrapper in objs)
@@ -234,7 +233,7 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent
    // repopulate current output params if needed
    if (_outputFilterIndices is null)
    {
-      _outputFilterIndices = [];
+      _outputFilterIndices = new();
      foreach (var output in Params.Output)
      {
        if (Enum.TryParse(output.Name, out ObjectType filter))
@@ -290,5 +289,8 @@ public class QuerySpeckleObjects : GH_Component, IGH_VariableParameterComponent
    base.RemovedFromDocument(document);
  }

-  private void OnParameterSourceChanged(object sender, GH_ParamServerEventArgs args) { }
+  private void OnParameterSourceChanged(object sender, GH_ParamServerEventArgs args) =>
+    // an empty filter dict will trigger the SortObjectsByGeometryBaseType method.
+    // we only want to re-sort objects if an input has changed, not on every trigger of solve instance.
+    _filterDict.Clear();
 }
@@ -103,7 +103,7 @@ public class SpeckleDataObjectPassthrough()
    List<SpeckleGeometryWrapperGoo> inputGeometry = new();
    if (!da.GetDataList(1, inputGeometry) && result == null)
    {
-      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Pass in a Speckle DataObject or Geometries");
+      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, $"Pass in a Speckle DataObject or Geometries.");
      return;
    }

@@ -111,7 +111,7 @@ public class SpeckleDataObjectPassthrough()
    {
      if (inputGeo.Value is SpeckleBlockInstanceWrapper)
      {
-        AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "DataObjects cannot contain Block Instances");
+        AddRuntimeMessage(GH_RuntimeMessageLevel.Error, $"DataObjects cannot contain Block Instances.");
        return;
      }
    }
@@ -158,10 +158,6 @@ public class SpeckleDataObjectPassthrough()
      result.Properties = inputProperties;
    }

-    // generate application ID for new data objects. Unlike SpeckleGeometry, DataObject wrappers aren't created
-    // through casting (which auto-generates IDs), so we must explicitly ensure an ID exists here
-    result.ApplicationId ??= Guid.NewGuid().ToString();
-
    // get the path
    string? path =
      result.Path.Count > 1 ? string.Join(Constants.LAYER_PATH_DELIMITER, result.Path) : result.Path.FirstOrDefault();
@@ -138,7 +138,7 @@ public class SpeckleGeometryPassthrough()

    if (result == null && inputGeometry == null)
    {
-      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Pass in a Speckle Geometry or Geometry");
+      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, $"Pass in a Speckle Geometry or Geometry.");
      return;
    }

@@ -1,5 +1,4 @@
 using System.Runtime.InteropServices;
-using GH_IO.Serialization;
 using Grasshopper.GUI;
 using Grasshopper.GUI.Canvas;
 using Grasshopper.Kernel;
@@ -47,13 +46,15 @@ public class ReceiveAsyncComponent : GH_AsyncComponent<ReceiveAsyncComponent>
  public bool JustPastedIn { get; set; }
  public string LastVersionDate { get; set; }
  public string LastInfoMessage { get; set; }
-  public SpeckleUrlModelResource? UrlModelResource { get; set; }
+  public HostApp.SpeckleUrlModelResource? UrlModelResource { get; set; }

  // DI props
  public IClient ApiClient { get; private set; }

-  protected override void RegisterInputParams(GH_InputParamManager pManager) =>
+  protected override void RegisterInputParams(GH_InputParamManager pManager)
+  {
    pManager.AddParameter(new SpeckleUrlModelResourceParam(GH_ParamAccess.item));
+  }

  protected override void RegisterOutputParams(GH_OutputParamManager pManager)
  {
@@ -64,14 +65,6 @@ public class ReceiveAsyncComponent : GH_AsyncComponent<ReceiveAsyncComponent>
      "The model collection of the loaded version",
      GH_ParamAccess.item
    );
-
-    pManager.AddParameter(
-      new SpecklePropertyGroupParam(),
-      "Properties",
-      "properties",
-      "Model-wide properties from the root collection",
-      GH_ParamAccess.item
-    );
  }

  protected override void SolveInstance(IGH_DataAccess da)
@@ -130,7 +123,7 @@ public class ReceiveAsyncComponent : GH_AsyncComponent<ReceiveAsyncComponent>
    {
      var autoReceiveMi = Menu_AppendItem(
        menu,
-        "Load new versions automatically",
+        "Load automatically",
        (s, e) =>
        {
          AutoReceive = !AutoReceive;
@@ -291,7 +284,7 @@ public class ReceiveAsyncComponent : GH_AsyncComponent<ReceiveAsyncComponent>
      Account? account = urlResource.Account.GetAccount(scope);
      if (account is null)
      {
-        throw new SpeckleAccountManagerException("No default account was found");
+        throw new SpeckleAccountManagerException($"No default account was found");
      }

      ApiClient?.Dispose();
@@ -304,32 +297,6 @@ public class ReceiveAsyncComponent : GH_AsyncComponent<ReceiveAsyncComponent>
      AddRuntimeMessage(GH_RuntimeMessageLevel.Error, e.ToFormattedString());
    }
  }
-
-  public override bool Write(GH_IWriter writer)
-  {
-    // call base implementation first
-    var result = base.Write(writer);
-
-    // persist AutoReceive setting
-    writer.SetBoolean("AutoReceive", AutoReceive);
-
-    return result;
-  }
-
-  public override bool Read(GH_IReader reader)
-  {
-    // call base implementation first
-    var result = base.Read(reader);
-
-    // restore AutoReceive setting
-    bool autoReceive = false;
-    if (reader.TryGetBoolean("AutoReceive", ref autoReceive))
-    {
-      AutoReceive = autoReceive;
-    }
-
-    return result;
-  }
 }

 public sealed class ReceiveComponentWorker : WorkerInstance<ReceiveAsyncComponent>
@@ -344,7 +311,6 @@ public sealed class ReceiveComponentWorker : WorkerInstance<ReceiveAsyncComponen
  public Base Root { get; set; }
  public SpeckleUrlModelResource? UrlModelResource { get; set; }
  public SpeckleCollectionWrapperGoo Result { get; set; }
-  public SpecklePropertyGroupGoo? RootProperties { get; private set; }
  private List<(GH_RuntimeMessageLevel, string)> RuntimeMessages { get; } = new();

  public override WorkerInstance<ReceiveAsyncComponent> Duplicate(string id, CancellationToken cancellationToken)
@@ -381,7 +347,6 @@ public sealed class ReceiveComponentWorker : WorkerInstance<ReceiveAsyncComponen
    }

    da.SetData(0, Result);
-    da.SetData(1, RootProperties);
  }

  public override async Task DoWork(Action<string, double> reportProgress, Action done)
@@ -447,89 +412,66 @@ public sealed class ReceiveComponentWorker : WorkerInstance<ReceiveAsyncComponen
    }

    using var scope = PriorityLoader.CreateScopeForActiveDocument();
-    try
+    Root = await scope
+      .Get<GrasshopperReceiveOperation>()
+      .ReceiveCommitObject(receiveInfo, progress, CancellationToken)
+      .ConfigureAwait(false);
+
+    CancellationToken.ThrowIfCancellationRequested();
+
+    // Step 2 - CONVERT
+    //receiveComponent.Message = $"Unpacking...";
+    TraversalContextUnpacker traversalContextUnpacker = new();
+    var unpackedRoot = scope.Get<RootObjectUnpacker>().Unpack(Root);
+
+    // separate atomic objects from block instances
+    var (atomicObjects, blockInstances) = scope
+      .Get<RootObjectUnpacker>()
+      .SplitAtomicObjectsAndInstances(unpackedRoot.ObjectsToConvert);
+
+    // initialize unpackers and collection builder
+    var colorUnpacker = new GrasshopperColorUnpacker(unpackedRoot);
+    var materialUnpacker = new GrasshopperMaterialUnpacker(unpackedRoot);
+    var collectionRebuilder = new GrasshopperCollectionRebuilder(
+      (Root as Collection) ?? new Collection { name = "unnamed" }
+    );
+
+    // convert atomic objects directly
+    var mapHandler = new LocalToGlobalMapHandler(
+      traversalContextUnpacker,
+      collectionRebuilder,
+      colorUnpacker,
+      materialUnpacker
+    );
+
+    foreach (var atomicContext in atomicObjects)
    {
-      Root = await scope
-        .Get<GrasshopperReceiveOperation>()
-        .ReceiveCommitObject(receiveInfo, progress, CancellationToken)
-        .ConfigureAwait(false);
-
-      CancellationToken.ThrowIfCancellationRequested();
-
-      SpecklePropertyGroupGoo? rootPropertiesGoo = null;
-      if (Root is RootCollection rootCollection && rootCollection.properties.Count > 0)
-      {
-        rootPropertiesGoo = new SpecklePropertyGroupGoo(rootCollection.properties);
-      }
-
-      // Step 2 - CONVERT
-      //receiveComponent.Message = $"Unpacking...";
-      SpeckleConversionContext.SetupCurrent(scope);
-
-      var unpackedRoot = scope.Get<RootObjectUnpacker>().Unpack(Root);
-
-      // separate atomic objects from block instances
-      var (atomicObjects, blockInstances) = scope
-        .Get<RootObjectUnpacker>()
-        .SplitAtomicObjectsAndInstances(unpackedRoot.ObjectsToConvert);
-
-      // initialize unpackers and collection builder (data holders - created with new)
-      var colorUnpacker = new GrasshopperColorUnpacker(unpackedRoot);
-      var materialUnpacker = new GrasshopperMaterialUnpacker(unpackedRoot);
-      var collectionRebuilder = new GrasshopperCollectionRebuilder(
-        (Root as Collection) ?? new Collection { name = "unnamed" }
-      );
-
-      // get handler from DI and initialize with per-operation data
-      var mapHandler = scope
-        .Get<LocalToGlobalMapHandler>()
-        .Initialize(
-          scope.Get<TraversalContextUnpacker>(),
-          colorUnpacker,
-          materialUnpacker,
-          collectionRebuilder,
-          unpackedRoot.DefinitionProxies
-        );
-
-      // handler deals with two-pass conversion: normal objects first, then DataObjects with InstanceProxies
-      mapHandler.ConvertAtomicObjects(atomicObjects);
-
-      // process block instances using converted atomic objects
-      // internally filters out InstanceProxies that belong to registered DataObjects
-      // block processing needs converted objects, but object filtering needs block definitions.
-      mapHandler.ConvertBlockInstances(blockInstances);
-
-      Result = new SpeckleCollectionWrapperGoo(collectionRebuilder.RootCollectionWrapper);
-      RootProperties = rootPropertiesGoo;
-
-      // TODO: If we have NodeRun events later, better to have `ComponentTracker` to use across components
-      var customProperties = new Dictionary<string, object>()
-      {
-        { "isAsync", true },
-        { "sourceHostApp", HostApplications.GetSlugFromHostAppNameAndVersion(receiveInfo.SourceApplication) },
-        { "auto", Parent.AutoReceive }
-      };
-      if (receiveInfo.WorkspaceId != null)
-      {
-        customProperties.Add("workspace_id", receiveInfo.WorkspaceId);
-      }
-
-      if (receiveInfo.SelectedVersionUserId != null)
-      {
-        customProperties.Add(
-          "isMultiplayer",
-          receiveInfo.SelectedVersionUserId != Parent.ApiClient.Account.userInfo.id
-        );
-      }
-
-      await scope
-        .Get<IMixPanelManager>()
-        .TrackEvent(MixPanelEvents.Receive, Parent.ApiClient.Account, customProperties);
+      mapHandler.ConvertAtomicObject(atomicContext);
    }
-    finally
+
+    // process block instances using converted atomic objects
+    // block processing needs converted objects, but object filtering needs block definitions.
+    mapHandler.ConvertBlockInstances(blockInstances, unpackedRoot.DefinitionProxies);
+
+    Result = new SpeckleCollectionWrapperGoo(collectionRebuilder.RootCollectionWrapper);
+
+    // TODO: If we have NodeRun events later, better to have `ComponentTracker` to use across components
+    var customProperties = new Dictionary<string, object>()
    {
-      SpeckleConversionContext.EndCurrent();
+      { "isAsync", true },
+      { "sourceHostApp", HostApplications.GetSlugFromHostAppNameAndVersion(receiveInfo.SourceApplication) },
+      { "auto", Parent.AutoReceive }
+    };
+    if (receiveInfo.WorkspaceId != null)
+    {
+      customProperties.Add("workspace_id", receiveInfo.WorkspaceId);
    }
+
+    if (receiveInfo.SelectedVersionUserId != null)
+    {
+      customProperties.Add("isMultiplayer", receiveInfo.SelectedVersionUserId != Parent.ApiClient.Account.userInfo.id);
+    }
+    await scope.Get<IMixPanelManager>().TrackEvent(MixPanelEvents.Receive, Parent.ApiClient.Account, customProperties);
  }
 }

@@ -1,6 +1,5 @@
 using Grasshopper.Kernel;
 using Microsoft.Extensions.DependencyInjection;
-using Rhino;
 using Speckle.Connectors.Common;
 using Speckle.Connectors.Common.Analytics;
 using Speckle.Connectors.Common.Operations;
@@ -13,7 +12,6 @@ using Speckle.Connectors.GrasshopperShared.Properties;
 using Speckle.Connectors.GrasshopperShared.Registration;
 using Speckle.Sdk;
 using Speckle.Sdk.Api;
-using Speckle.Sdk.Api.GraphQL.Models;
 using Speckle.Sdk.Credentials;
 using Speckle.Sdk.Models.Collections;

@@ -33,21 +31,11 @@ public class ReceiveComponentInput

 public class ReceiveComponentOutput
 {
-  /// <remarks>
-  /// Made nullable as output can be null when Run = false or on error
-  /// </remarks>
-  public SpeckleCollectionWrapperGoo? RootObject { get; set; }
-  public SpecklePropertyGroupGoo? RootProperties { get; set; }
+  public SpeckleCollectionWrapperGoo RootObject { get; set; }
 }

 public class ReceiveComponent : SpeckleTaskCapableComponent<ReceiveComponentInput, ReceiveComponentOutput>
 {
-  private IClient? _apiClient;
-  private string? _lastVersionId;
-  private SpeckleUrlModelResource? _lastResource;
-  public override Guid ComponentGuid => new("74954F59-B1B7-41FD-97DE-4C6B005F2801");
-  protected override Bitmap Icon => Resources.speckle_operations_syncload;
-
  public ReceiveComponent()
    : base(
      "(Sync) Load",
@@ -57,6 +45,9 @@ public class ReceiveComponent : SpeckleTaskCapableComponent<ReceiveComponentInpu
      ComponentCategories.DEVELOPER
    ) { }

+  public override Guid ComponentGuid => new("74954F59-B1B7-41FD-97DE-4C6B005F2801");
+  protected override Bitmap Icon => Resources.speckle_operations_syncload;
+
  protected override void RegisterInputParams(GH_InputParamManager pManager)
  {
    pManager.AddParameter(new SpeckleUrlModelResourceParam(GH_ParamAccess.item));
@@ -72,14 +63,6 @@ public class ReceiveComponent : SpeckleTaskCapableComponent<ReceiveComponentInpu
      "The model collection of the loaded version",
      GH_ParamAccess.item
    );
-
-    pManager.AddParameter(
-      new SpecklePropertyGroupParam(),
-      "Properties",
-      "properties",
-      "Model-wide properties from the root collection",
-      GH_ParamAccess.item
-    );
  }

  protected override ReceiveComponentInput GetInput(IGH_DataAccess da)
@@ -94,30 +77,19 @@ public class ReceiveComponent : SpeckleTaskCapableComponent<ReceiveComponentInpu
    bool run = false;
    da.GetData(1, ref run);

-    if (run)
-    {
-      SetupSubscription(url);
-    }
-    else
-    {
-      CleanupSubscription();
-    }
-
-    return new ReceiveComponentInput(url, run);
+    return new(url, run);
  }

  protected override void SetOutput(IGH_DataAccess da, ReceiveComponentOutput result)
  {
    if (result.RootObject is null)
    {
-      Message = _apiClient != null ? "Monitoring" : "Not Loaded";
+      Message = "Not Loaded";
    }
    else
    {
      da.SetData(0, result.RootObject);
-      da.SetData(1, result.RootProperties);
-
-      Message = _apiClient != null ? "Loaded" : "Done";
+      Message = "Done";
    }
  }

@@ -135,221 +107,92 @@ public class ReceiveComponent : SpeckleTaskCapableComponent<ReceiveComponentInpu
        GH_RuntimeMessageLevel.Error,
        "Only one model can be loaded at a time. To load to multiple models, please use different load components."
      );
-      return new ReceiveComponentOutput();
+      return new();
    }
    if (!input.Run)
    {
-      return new ReceiveComponentOutput();
+      return new();
    }

    using var scope = PriorityLoader.CreateScopeForActiveDocument();
+    var clientFactory = scope.ServiceProvider.GetRequiredService<IClientFactory>();
+    var receiveOperation = scope.ServiceProvider.GetRequiredService<GrasshopperReceiveOperation>();

-    try
+    // Do the thing 👇🏼
+
+    Account? account = input.Resource.Account.GetAccount(scope);
+    if (account is null)
    {
-      var clientFactory = scope.ServiceProvider.GetRequiredService<IClientFactory>();
-      var receiveOperation = scope.ServiceProvider.GetRequiredService<GrasshopperReceiveOperation>();
-
-      // Do the thing 👇🏼
-
-      Account? account = input.Resource.Account.GetAccount(scope);
-      if (account is null)
-      {
-        throw new SpeckleAccountManagerException("No default account was found");
-      }
-
-      using var client = clientFactory.Create(account);
-      var receiveInfo = await input.Resource.GetReceiveInfo(client, cancellationToken).ConfigureAwait(false);
-
-      // store version id for tracking
-      _lastVersionId = receiveInfo.SelectedVersionId;
-
-      var progress = new Progress<CardProgress>(_ =>
-      {
-        // TODO: Progress only makes sense in non-blocking async receive, which is not supported yet.
-        // Message = $"{progress.Status}: {progress.Progress}";
-      });
-
-      var root = await receiveOperation
-        .ReceiveCommitObject(receiveInfo, progress, cancellationToken)
-        .ConfigureAwait(false);
-
-      // extract model-wide root properties (see cnx-2722)
-      SpecklePropertyGroupGoo? rootPropertiesGoo = null;
-      if (root is RootCollection rootCollection && rootCollection.properties.Count > 0)
-      {
-        rootPropertiesGoo = new SpecklePropertyGroupGoo(rootCollection.properties);
-      }
-
-      // TODO: If we have NodeRun events later, better to have `ComponentTracker` to use across components
-      var customProperties = new Dictionary<string, object>
-      {
-        { "isAsync", false },
-        { "sourceHostApp", HostApplications.GetSlugFromHostAppNameAndVersion(receiveInfo.SourceApplication) }
-      };
-      if (receiveInfo.WorkspaceId != null)
-      {
-        customProperties.Add("workspace_id", receiveInfo.WorkspaceId);
-      }
-      if (receiveInfo.SelectedVersionUserId != null)
-      {
-        customProperties.Add("isMultiplayer", receiveInfo.SelectedVersionUserId != client.Account.userInfo.id);
-      }
-      var mixpanel = PriorityLoader.Container.GetRequiredService<IMixPanelManager>();
-      await mixpanel.TrackEvent(MixPanelEvents.Receive, account, customProperties);
-
-      // Setup conversion context BEFORE unpacking (which triggers DataObjectConverter)
-      SpeckleConversionContext.SetupCurrent(scope);
-
-      var rootObjectUnpacker = scope.ServiceProvider.GetService<RootObjectUnpacker>();
-      var unpackedRoot = rootObjectUnpacker.Unpack(root);
-
-      // split atomic objects from block components before conversion
-      var (atomicObjects, blockInstances) = rootObjectUnpacker.SplitAtomicObjectsAndInstances(
-        unpackedRoot.ObjectsToConvert
-      );
-
-      // Initialize unpackers and collection builder (data holders - created with new)
-      var colorUnpacker = new GrasshopperColorUnpacker(unpackedRoot);
-      var materialUnpacker = new GrasshopperMaterialUnpacker(unpackedRoot);
-      var collectionRebuilder = new GrasshopperCollectionRebuilder(
-        (root as Collection) ?? new Collection { name = "unnamed" }
-      );
-
-      // get handler from DI and initialize with per-operation data
-      var mapHandler = scope
-        .ServiceProvider.GetRequiredService<LocalToGlobalMapHandler>()
-        .Initialize(
-          scope.ServiceProvider.GetRequiredService<TraversalContextUnpacker>(),
-          colorUnpacker,
-          materialUnpacker,
-          collectionRebuilder,
-          unpackedRoot.DefinitionProxies
-        );
-
-      // two-pass conversion: normal objects first, then DataObjects with InstanceProxies
-      mapHandler.ConvertAtomicObjects(atomicObjects);
-
-      // process block instances (internally filters InstanceProxies belonging to registered DataObjects)
-      mapHandler.ConvertBlockInstances(blockInstances);
-
-      var goo = new SpeckleCollectionWrapperGoo(collectionRebuilder.RootCollectionWrapper);
-      return new ReceiveComponentOutput { RootObject = goo, RootProperties = rootPropertiesGoo };
-    }
-    finally
-    {
-      SpeckleConversionContext.EndCurrent();
-    }
-  }
-
-  private void SetupSubscription(SpeckleUrlModelResource resource)
-  {
-    // skip if already subscribed to this resource
-    if (_apiClient != null && _lastResource != null && _lastResource.Equals(resource))
-    {
-      return;
+      throw new SpeckleAccountManagerException($"No default account was found");
    }

-    // only subscribe for Model URLs (not specific versions)
-    if (resource is SpeckleUrlModelVersionResource)
+    using var client = clientFactory.Create(account);
+    var receiveInfo = await input.Resource.GetReceiveInfo(client, cancellationToken).ConfigureAwait(false);
+
+    var progress = new Progress<CardProgress>(_ =>
    {
-      CleanupSubscription();
-      _lastResource = resource;
-      return;
-    }
+      // TODO: Progress only makes sense in non-blocking async receive, which is not supported yet.
+      // Message = $"{progress.Status}: {progress.Progress}";
+    });

-    try
+    var root = await receiveOperation
+      .ReceiveCommitObject(receiveInfo, progress, cancellationToken)
+      .ConfigureAwait(false);
+
+    // TODO: If we have NodeRun events later, better to have `ComponentTracker` to use across components
+    var customProperties = new Dictionary<string, object>()
    {
-      CleanupSubscription(); // clean up old subscription first
-
-      using var scope = PriorityLoader.CreateScopeForActiveDocument();
-      var account = resource.Account.GetAccount(scope);
-      if (account == null)
-      {
-        return;
-      }
-
-      _apiClient = scope.Get<IClientFactory>().Create(account);
-      _apiClient.Subscription.CreateProjectVersionsUpdatedSubscription(resource.ProjectId).Listeners +=
-        OnVersionCreated;
-
-      _lastResource = resource;
-      Message = "Monitoring";
-    }
-    catch (Exception ex) when (!ex.IsFatal())
+      { "isAsync", false },
+      { "sourceHostApp", HostApplications.GetSlugFromHostAppNameAndVersion(receiveInfo.SourceApplication) }
+    };
+    if (receiveInfo.WorkspaceId != null)
    {
-      AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, $"Could not setup monitoring: {ex.Message}");
+      customProperties.Add("workspace_id", receiveInfo.WorkspaceId);
    }
-  }
+    if (receiveInfo.SelectedVersionUserId != null)
+    {
+      customProperties.Add("isMultiplayer", receiveInfo.SelectedVersionUserId != client.Account.userInfo.id);
+    }
+    var mixpanel = PriorityLoader.Container.GetRequiredService<IMixPanelManager>();
+    await mixpanel.TrackEvent(MixPanelEvents.Receive, account, customProperties);

-  private void OnVersionCreated(object? sender, ProjectVersionsUpdatedMessage e) =>
-    // new version detected - trigger reload
-    RhinoApp.InvokeOnUiThread(
-      (Action)
-        delegate
-        {
-          ExpireSolution(true);
-        }
+    // We need to rethink these lovely unpackers, there's a bit too many of 'em
+    var rootObjectUnpacker = scope.ServiceProvider.GetService<RootObjectUnpacker>();
+    var traversalContextUnpacker = new TraversalContextUnpacker();
+
+    var unpackedRoot = rootObjectUnpacker.Unpack(root);
+
+    // split atomic objects from block components before conversion
+    var (atomicObjects, blockInstances) = rootObjectUnpacker.SplitAtomicObjectsAndInstances(
+      unpackedRoot.ObjectsToConvert
    );

-  private void CleanupSubscription()
-  {
-    if (_apiClient != null && _lastResource != null)
-    {
-      try
-      {
-        _apiClient.Subscription.CreateProjectVersionsUpdatedSubscription(_lastResource.ProjectId).Listeners -=
-          OnVersionCreated;
-      }
-      catch (Exception ex) when (!ex.IsFatal())
-      {
-        // ignore cleanup errors
-      }
+    // Initialize unpackers and collection builder
+    var colorUnpacker = new GrasshopperColorUnpacker(unpackedRoot);
+    var materialUnpacker = new GrasshopperMaterialUnpacker(unpackedRoot);
+    var collectionRebuilder = new GrasshopperCollectionRebuilder(
+      (root as Collection) ?? new Collection { name = "unnamed" }
+    );

-      _apiClient.Dispose();
-      _apiClient = null;
-    }
-  }
+    // convert atomic objects directly
+    var mapHandler = new LocalToGlobalMapHandler(
+      traversalContextUnpacker,
+      collectionRebuilder,
+      colorUnpacker,
+      materialUnpacker
+    );

-  // Cleanup on removal
-  public override void RemovedFromDocument(GH_Document document)
-  {
-    CleanupSubscription();
-    base.RemovedFromDocument(document);
-  }
-
-  // Handle document context changes
-  public override void DocumentContextChanged(GH_Document document, GH_DocumentContext context)
-  {
-    if (context == GH_DocumentContext.Unloaded)
+    foreach (var atomicContext in atomicObjects)
    {
-      CleanupSubscription();
-    }
-    else if (context == GH_DocumentContext.Loaded && _lastResource != null && _apiClient != null)
-    {
-      // Check for version changes when document reopens
-      Task.Run(async () =>
-      {
-        try
-        {
-          var receiveInfo = await _lastResource.GetReceiveInfo(_apiClient);
-          if (receiveInfo.SelectedVersionId != _lastVersionId)
-          {
-            RhinoApp.InvokeOnUiThread(
-              (Action)
-                delegate
-                {
-                  ExpireSolution(true);
-                }
-            );
-          }
-        }
-        catch (Exception ex) when (!ex.IsFatal())
-        {
-          // ignore errors during background check
-        }
-      });
+      mapHandler.ConvertAtomicObject(atomicContext);
    }

-    base.DocumentContextChanged(document, context);
+    // process block instances using converted atomic objects
+    // block processing needs converted objects, but object filtering needs block definitions.
+    mapHandler.ConvertBlockInstances(blockInstances, unpackedRoot.DefinitionProxies);
+
+    // var x = new SpeckleCollectionGoo { Value = collGen.RootCollection };
+    var goo = new SpeckleCollectionWrapperGoo(collectionRebuilder.RootCollectionWrapper);
+    return new ReceiveComponentOutput { RootObject = goo };
  }
 }
@@ -51,7 +51,6 @@ public class SendAsyncComponent : GH_AsyncComponent<SendAsyncComponent>
  public IClient ApiClient { get; set; }
  public HostApp.SpeckleUrlModelResource? UrlModelResource { get; set; }
  public SpeckleCollectionWrapperGoo? RootCollectionWrapper { get; set; }
-  public SpecklePropertyGroupGoo? RootProperties { get; private set; }
  public SpeckleUrlModelResource? OutputParam { get; set; }
  public bool HasMultipleInputs { get; set; }

@@ -59,10 +58,7 @@ public class SendAsyncComponent : GH_AsyncComponent<SendAsyncComponent>

  protected override void RegisterInputParams(GH_InputParamManager pManager)
  {
-    // speckle model
    pManager.AddParameter(new SpeckleUrlModelResourceParam());
-
-    // collection
    pManager.AddParameter(
      new SpeckleCollectionParam(GH_ParamAccess.item),
      "Collection",
@@ -72,16 +68,6 @@ public class SendAsyncComponent : GH_AsyncComponent<SendAsyncComponent>
    );
    pManager.AddTextParameter("Version Message", "versionMessage", "The version message", GH_ParamAccess.item);
    pManager[2].Optional = true;
-
-    // model-wide props (see cnx-2722)
-    pManager.AddParameter(
-      new SpecklePropertyGroupParam(),
-      "Properties",
-      "properties",
-      "Optional model-wide properties to attach to the root collection",
-      GH_ParamAccess.item
-    );
-    pManager[3].Optional = true;
  }

  protected override void RegisterOutputParams(GH_OutputParamManager pManager)
@@ -294,19 +280,6 @@ public class SendAsyncComponent : GH_AsyncComponent<SendAsyncComponent>
    string? versionMessage = null;
    da.GetData(2, ref versionMessage);
    VersionMessage = versionMessage;
-
-    SpecklePropertyGroupGoo? rootPropsGoo = null;
-    da.GetData(3, ref rootPropsGoo);
-
-    // validate single properties group
-    // we can't support a list input here, what does that even mean? grafting the collection to each props entry?? scary.
-    if (Params.Input[3].VolatileData.DataCount > 1)
-    {
-      AddRuntimeMessage(GH_RuntimeMessageLevel.Error, "Only one Model Properties group is allowed");
-      return;
-    }
-
-    RootProperties = rootPropsGoo;
  }
 }

@@ -422,13 +395,6 @@ public class SendComponentWorker : WorkerInstance<SendAsyncComponent>
      throw new InvalidOperationException("Root Collection was null");
    }

-    // safe to always create new wrapper since users cannot create SpeckleRootCollectionWrapper directly - it's only
-    // constructed here from the Collection + Model Properties inputs.
-    // if this changes, then we need to update below!
-    var rootWrapper = new SpeckleRootCollectionWrapper(rootCollectionWrapper.Value, Parent.RootProperties?.Unwrap());
-
-    rootCollectionWrapper = new SpeckleRootCollectionWrapperGoo(rootWrapper);
-
    // Step 1 - SEND TO SERVER
    var sendInfo = await urlModelResource.GetSendInfo(Parent.ApiClient, CancellationToken).ConfigureAwait(false);

@@ -442,7 +408,7 @@ public class SendComponentWorker : WorkerInstance<SendAsyncComponent>
    var sendOperation = scope.ServiceProvider.GetRequiredService<SendOperation<SpeckleCollectionWrapperGoo>>();
    SendOperationResult? result = await sendOperation
      .Execute(
-        new List<SpeckleCollectionWrapperGoo> { rootCollectionWrapper },
+        new List<SpeckleCollectionWrapperGoo>() { rootCollectionWrapper },
        sendInfo,
        Parent.VersionMessage,
        progress,
@@ -20,19 +20,12 @@ public class SendComponentInput
  public SpeckleUrlModelResource Resource { get; }
  public SpeckleCollectionWrapperGoo Input { get; }
  public bool Run { get; }
-  public SpecklePropertyGroupGoo? RootProperties { get; }

-  public SendComponentInput(
-    SpeckleUrlModelResource resource,
-    SpeckleCollectionWrapperGoo input,
-    bool run,
-    SpecklePropertyGroupGoo? rootProperties
-  )
+  public SendComponentInput(SpeckleUrlModelResource resource, SpeckleCollectionWrapperGoo input, bool run)
  {
    Resource = resource;
    Input = input;
    Run = run;
-    RootProperties = rootProperties;
  }
 }

@@ -43,11 +36,6 @@ public class SendComponentOutput(SpeckleUrlModelResource? resource)

 public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, SendComponentOutput>
 {
-  public override Guid ComponentGuid => new("0CF0D173-BDF0-4AC2-9157-02822B90E9FB");
-  public string? Url { get; private set; }
-  public string? VersionMessage { get; private set; }
-  protected override Bitmap Icon => Resources.speckle_operations_syncpublish;
-
  public SendComponent()
    : base(
      "(Sync) Publish",
@@ -57,12 +45,17 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
      ComponentCategories.DEVELOPER
    ) { }

+  public override Guid ComponentGuid => new("0CF0D173-BDF0-4AC2-9157-02822B90E9FB");
+
+  public string? Url { get; private set; }
+
+  public string? VersionMessage { get; private set; }
+
+  protected override Bitmap Icon => Resources.speckle_operations_syncpublish;
+
  protected override void RegisterInputParams(GH_InputParamManager pManager)
  {
-    // speckle model
    pManager.AddParameter(new SpeckleUrlModelResourceParam());
-
-    // collection
    pManager.AddParameter(
      new SpeckleCollectionParam(GH_ParamAccess.item),
      "Collection",
@@ -72,22 +65,13 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
    );
    pManager.AddTextParameter("Version Message", "versionMessage", "The version message", GH_ParamAccess.item);
    pManager[2].Optional = true;
-
-    // model-wide props (see cnx-2722)
-    pManager.AddParameter(
-      new SpecklePropertyGroupParam(),
-      "Properties",
-      "properties",
-      "Optional model-wide properties to attach to the root collection",
-      GH_ParamAccess.item
-    );
-    pManager[3].Optional = true;
-
    pManager.AddBooleanParameter("Run", "r", "Run the publish operation", GH_ParamAccess.item);
  }

-  protected override void RegisterOutputParams(GH_OutputParamManager pManager) =>
+  protected override void RegisterOutputParams(GH_OutputParamManager pManager)
+  {
    pManager.AddParameter(new SpeckleUrlModelResourceParam());
+  }

  protected override SendComponentInput GetInput(IGH_DataAccess da)
  {
@@ -109,20 +93,10 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
    da.GetData(2, ref versionMessage);
    VersionMessage = versionMessage;

-    SpecklePropertyGroupGoo? rootPropsGoo = null;
-    da.GetData(3, ref rootPropsGoo);
-
-    // validate single properties group
-    // we can't support a list input here, what does that even mean? grafting the collection to each props entry?? scary.
-    if (Params.Input[3].VolatileData.DataCount > 1)
-    {
-      throw new SpeckleException("Only one Model Properties group is allowed");
-    }
-
    bool run = false;
-    da.GetData(4, ref run);
+    da.GetData(3, ref run);

-    return new SendComponentInput(resource.NotNull(), rootCollectionWrapper, run, rootPropsGoo);
+    return new SendComponentInput(resource.NotNull(), rootCollectionWrapper, run);
  }

  protected override void SetOutput(IGH_DataAccess da, SendComponentOutput result)
@@ -147,7 +121,7 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
    {
      Menu_AppendSeparator(menu);

-      Menu_AppendItem(menu, "View created model online ↗", (s, e) => Open(Url));
+      Menu_AppendItem(menu, $"View created model online ↗", (s, e) => Open(Url));
    }

    static void Open(string url)
@@ -192,12 +166,6 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
      return new(null);
    }

-    // safe to always create new wrapper since users cannot create SpeckleRootCollectionWrapper directly - it's only
-    // constructed here from the Collection + Model Properties inputs.
-    // if this changes, then we need to update below!
-    var rootWrapper = new SpeckleRootCollectionWrapper(input.Input.Value, input.RootProperties?.Unwrap());
-    var collectionToSend = new SpeckleRootCollectionWrapperGoo(rootWrapper);
-
    using var scope = PriorityLoader.CreateScopeForActiveDocument();
    var clientFactory = scope.ServiceProvider.GetRequiredService<IClientFactory>();
    var sendOperation = scope.ServiceProvider.GetRequiredService<SendOperation<SpeckleCollectionWrapperGoo>>();
@@ -205,7 +173,7 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
    Account? account = input.Resource.Account.GetAccount(scope);
    if (account is null)
    {
-      throw new SpeckleAccountManagerException("No default account was found");
+      throw new SpeckleAccountManagerException($"No default account was found");
    }

    var progress = new Progress<CardProgress>(_ =>
@@ -218,7 +186,7 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
    var sendInfo = await input.Resource.GetSendInfo(client, cancellationToken).ConfigureAwait(false);
    await sendOperation
      .Execute(
-        new List<SpeckleCollectionWrapperGoo> { collectionToSend },
+        new List<SpeckleCollectionWrapperGoo>() { input.Input },
        sendInfo,
        VersionMessage,
        progress,
@@ -227,7 +195,7 @@ public class SendComponent : SpeckleTaskCapableComponent<SendComponentInput, Sen
      .ConfigureAwait(false);

    // TODO: If we have NodeRun events later, better to have `ComponentTracker` to use across components
-    var customProperties = new Dictionary<string, object> { { "isAsync", false } };
+    var customProperties = new Dictionary<string, object>() { { "isAsync", false } };
    if (sendInfo.WorkspaceId != null)
    {
      customProperties.Add("workspace_id", sendInfo.WorkspaceId);
@@ -87,7 +87,6 @@ public class SpeckleSelectModelComponent : GH_Component
      string? urlInput = null;

      // SCENARIO 1: Component has input wire connected
-
      if (da.GetData(0, ref urlInput))
      {
        UrlInput = urlInput;
@@ -100,11 +99,6 @@ public class SpeckleSelectModelComponent : GH_Component
          return;
        }

-        if (_justPastedIn)
-        {
-          RestoreAccountFromStoredState();
-        }
-
        try
        {
          // NOTE: once we split the logic in Sender and Receiver components, we need to set flag correctly
@@ -138,9 +132,22 @@ public class SpeckleSelectModelComponent : GH_Component
        _storedUserId = SpeckleOperationWizard.SelectedAccount?.id;
      }

-      if (_justPastedIn)
+      if (_justPastedIn && _storedUserId != null && !string.IsNullOrEmpty(_storedUserId))
      {
-        RestoreAccountFromStoredState();
+        try
+        {
+          SpeckleOperationWizard.SetAccountFromId(_storedUserId);
+        }
+        catch (SpeckleAccountManagerException e)
+        {
+          // Swallow and move onto checking server.
+          Console.WriteLine(e);
+        }
+
+        if (_storedServer != null && SpeckleOperationWizard.SelectedAccount == null)
+        {
+          SpeckleOperationWizard.SetAccountFromIdAndUrl(_storedUserId, _storedServer);
+        }
      }

      // Validate backing data
@@ -389,39 +396,4 @@ public class SpeckleSelectModelComponent : GH_Component
    VersionContextMenuButton.ExpirePreview(redraw);
    base.ExpirePreview(redraw);
  }
-
-  /// <summary>
-  /// Restores the account from stored state when the component is pasted or loaded from file.
-  /// </summary>
-  /// <remarks>
-  /// Attempts to restore account in two stages:
-  /// <list type="number">
-  /// <item>First tries to get account by stored user ID</item>
-  /// <item>If that fails and server url is available, falls back to getting any account matching the server</item>
-  /// </list>
-  /// Only executes when <see cref="_justPastedIn"/> is true and <see cref="_storedUserId"/> is not empty.
-  /// </remarks>
-  private void RestoreAccountFromStoredState()
-  {
-    if (_storedUserId is null || string.IsNullOrEmpty(_storedUserId))
-    {
-      return;
-    }
-
-    try
-    {
-      SpeckleOperationWizard.SetAccountFromId(_storedUserId);
-    }
-    catch (SpeckleAccountManagerException e)
-    {
-      Console.WriteLine(e);
-    }
-
-    // Fallback: if account wasn't found by ID but we have a server URL,
-    // try to find any account matching that server
-    if (_storedServer != null && SpeckleOperationWizard.SelectedAccount == null)
-    {
-      SpeckleOperationWizard.SetAccountFromIdAndUrl(_storedUserId, _storedServer);
-    }
-  }
 }
@@ -79,40 +79,22 @@ public class SpeckleOperationWizard
    var resources = SpeckleResourceBuilder.FromUrlString(input, token);
    if (resources.Length == 0)
    {
-      throw new SpeckleException("Input url string was empty");
+      throw new SpeckleException($"Input url string was empty");
    }

    if (resources.Length > 1)
    {
-      throw new SpeckleException("Input multi-model url is not supported");
+      throw new SpeckleException($"Input multi-model url is not supported");
    }

    var resource = resources.First();
    using var scope = PriorityLoader.CreateScopeForActiveDocument();
-    var urlDerivedAccount = resource.Account.GetAccount(scope);
+    var account = resource.Account.GetAccount(scope);
+    SetAccount(account, false);

-    // if no account is selected, happily go through the url derived account approach
    if (SelectedAccount == null)
    {
-      SetAccount(urlDerivedAccount, false);
-    }
-    // if we have an account from right-click context-menu, we rely on that and just validate that it's actually applicable to that server
-    else if (urlDerivedAccount != null && SelectedAccount.serverInfo.url != urlDerivedAccount.serverInfo.url)
-    {
-      throw new SpeckleException(
-        $"Selected account is for '{SelectedAccount.serverInfo.url}' "
-          + $"but URL requires '{urlDerivedAccount.serverInfo.url}'"
-      );
-    }
-
-    // we have both scenarios covered
-    // Scenario #1 - default account from url
-    // Scenario #2 - triggered by account switch on right-click context (and validated)
-    if (SelectedAccount == null)
-    {
-      throw new SpeckleException(
-        $"No appropriate account found for the given '{urlDerivedAccount?.serverInfo.url}' server"
-      );
+      throw new SpeckleException("No account found for server URL");
    }

    IClient client = _clientFactory.Create(SelectedAccount);
@@ -107,14 +107,17 @@ public static class GrasshopperHelpers
      M12 = rhinoTransform.M01,
      M13 = rhinoTransform.M02,
      M14 = rhinoTransform.M03 * conversionFactor,
+
      M21 = rhinoTransform.M10,
      M22 = rhinoTransform.M11,
      M23 = rhinoTransform.M12,
      M24 = rhinoTransform.M13 * conversionFactor,
+
      M31 = rhinoTransform.M20,
      M32 = rhinoTransform.M21,
      M33 = rhinoTransform.M22,
      M34 = rhinoTransform.M23 * conversionFactor,
+
      M41 = rhinoTransform.M30,
      M42 = rhinoTransform.M31,
      M43 = rhinoTransform.M32,
@@ -136,8 +139,6 @@ public static class GrasshopperHelpers
    {
      switch (element)
      {
-        case null:
-          break; // skip nulls (CNX-2855)
        case SpeckleDataObjectWrapper dataObject:
          yield return dataObject;
          break;
@@ -152,7 +153,8 @@ public static class GrasshopperHelpers
              yield return subElement;
            }
          }
-
+          break;
+        default:
          break;
      }
    }
@@ -171,9 +173,11 @@ public static class GrasshopperHelpers
    {
      return instanceGoo.Value;
    }
-
-    SpeckleGeometryWrapperGoo objGoo = new();
-    return objGoo.CastFrom(goo) ? objGoo.Value : null;
+    else
+    {
+      SpeckleGeometryWrapperGoo objGoo = new();
+      return objGoo.CastFrom(goo) ? objGoo.Value : null;
+    }
  }

  /// <summary>
@@ -266,9 +270,7 @@ public static class GrasshopperHelpers

        for (int i = 0; i < elCount; i++)
        {
-          var item = subset[subsetCount + i];
-          // GH_ObjectWrapper accepts null to preserve tree structure for failed conversions (CNX-2855)
-          tree.EnsurePath(myPath).Add(item != null ? new GH_ObjectWrapper(item) : new GH_ObjectWrapper(null!));
+          tree.EnsurePath(myPath).Add(new Grasshopper.Kernel.Types.GH_ObjectWrapper(subset[subsetCount + i]));
        }

        subsetCount += elCount;
@@ -291,13 +293,6 @@ public static class GrasshopperHelpers
    {
      topology += myPath.ToString(false) + "-" + param.VolatileData.get_Branch(myPath).Count + " ";
    }
-
    return topology;
  }
-
-  /// <summary>
-  /// Converts Elements to Goo list, converting nulls to GH_ObjectWrapper(null) for topology preservation (CNX-2855)
-  /// </summary>
-  public static List<IGH_Goo> ToGooListWithNulls(this SpeckleCollectionWrapper coll) =>
-    coll.Elements.Select(e => e == null ? new GH_ObjectWrapper(null!) : ((SpeckleWrapper)e).CreateGoo()).ToList();
 }
@@ -4,7 +4,6 @@ using Speckle.Connectors.GrasshopperShared.Registration;
 using Speckle.Converters.Common;
 using Speckle.Sdk;
 using Speckle.Sdk.Common;
-using Speckle.Sdk.Common.Exceptions;
 using Speckle.Sdk.Models;

 namespace Speckle.Connectors.GrasshopperShared.HostApp;
@@ -30,13 +29,13 @@ public class SpeckleConversionContext(IRootToSpeckleConverter speckleConverter,
    }
  }

-  public static void SetupCurrent(IServiceScope? scope = null)
+  public static void SetupCurrent()
  {
    if (s_currentContext != null)
    {
      return;
    }
-    s_scope = scope ?? PriorityLoader.CreateScopeForActiveDocument();
+    s_scope = PriorityLoader.CreateScopeForActiveDocument();
    s_currentContext = s_scope.Get<SpeckleConversionContext>();
  }

@@ -51,21 +50,7 @@ public class SpeckleConversionContext(IRootToSpeckleConverter speckleConverter,
    s_scope = null;
  }

-  public Base? ConvertToSpeckle(object geo)
-  {
-    try
-    {
-      return speckleConverter.Convert(geo);
-    }
-    catch (ConversionException ex)
-    {
-      // changed as of CNX-2855
-      // log for debugging but don't throw - let caller handle null return
-      // we don't want to throw and fail whole operation, but want a way to signal to component that sumting wong
-      System.Diagnostics.Debug.WriteLine($"Conversion failed for {geo.GetType().Name}: {ex.Message}");
-      return null;
-    }
-  }
+  public Base ConvertToSpeckle(object geo) => speckleConverter.Convert(geo);

  public List<(object, Base)> ConvertToHost(Base input)
  {
@@ -75,7 +60,6 @@ public class SpeckleConversionContext(IRootToSpeckleConverter speckleConverter,
    {
      GeometryBase geometry => [(geometry, input)],
      List<GeometryBase> geometryList => geometryList.Select(o => ((object)o, input)).ToList(),
-      List<(GeometryBase, Base)> pairList when pairList.Count == 0 => [],
      IEnumerable<(GeometryBase, Base)> fallbackConversionResult
        => fallbackConversionResult.Select(o => ((object)o.Item1, o.Item2)).ToList(),
      object obj => [(obj, input)],
@@ -1,20 +1,12 @@
-using Microsoft.Extensions.Logging;
 using Rhino.Geometry;
 using Speckle.Connectors.Common.Operations.Receive;
 using Speckle.Connectors.GrasshopperShared.HostApp;
+using Speckle.Connectors.GrasshopperShared.Operations.Receive;
 using Speckle.Connectors.GrasshopperShared.Parameters;
-using Speckle.Converters.Common;
-using Speckle.Converters.Common.ToHost;
-using Speckle.Converters.Rhino;
 using Speckle.Sdk;
-using Speckle.Sdk.Common;
 using Speckle.Sdk.Models;
-using Speckle.Sdk.Models.Collections;
 using Speckle.Sdk.Models.GraphTraversal;
 using Speckle.Sdk.Models.Instances;
-using DataObject = Speckle.Objects.Data.DataObject;
-
-namespace Speckle.Connectors.GrasshopperShared.Operations.Receive;

 /// <summary>
 /// Handles conversion of atomic objects from TraversalContexts into Grasshopper wrapper objects.
@@ -27,404 +19,184 @@ namespace Speckle.Connectors.GrasshopperShared.Operations.Receive;
 internal sealed class LocalToGlobalMapHandler
 {
  public Dictionary<string, SpeckleGeometryWrapper> ConvertedObjectsMap { get; } = new();
+  public readonly GrasshopperCollectionRebuilder CollectionRebuilder;

-  // injected via constructor (DI-managed)
-  private readonly IDataObjectInstanceRegistry _dataObjectInstanceRegistry;
-  private readonly ILogger<LocalToGlobalMapHandler> _logger;
-  private readonly IConverterSettingsStore<RhinoConversionSettings> _settingsStore;
-
-  // set via Initialize() method (per-operation data)
-  private TraversalContextUnpacker _traversalContextUnpacker = null!;
-  private GrasshopperColorUnpacker _colorUnpacker = null!;
-  private GrasshopperMaterialUnpacker _materialUnpacker = null!;
-  private IReadOnlyCollection<InstanceDefinitionProxy>? _definitionProxies;
-
-  // auto property (fixes IDE0032)
-  public GrasshopperCollectionRebuilder CollectionRebuilder { get; private set; } = null!;
+  private readonly TraversalContextUnpacker _traversalContextUnpacker;
+  private readonly GrasshopperColorUnpacker _colorUnpacker;
+  private readonly GrasshopperMaterialUnpacker _materialUnpacker;

  public LocalToGlobalMapHandler(
-    IDataObjectInstanceRegistry dataObjectInstanceRegistry,
-    ILogger<LocalToGlobalMapHandler> logger,
-    IConverterSettingsStore<RhinoConversionSettings> settingsStore
-  )
-  {
-    _dataObjectInstanceRegistry = dataObjectInstanceRegistry;
-    _logger = logger;
-    _settingsStore = settingsStore;
-  }
-
-  /// <summary>
-  /// Initializes the handler with per-operation data.
-  /// Must be called before using ConvertAtomicObjects or ConvertBlockInstances.
-  /// </summary>
-  public LocalToGlobalMapHandler Initialize(
    TraversalContextUnpacker traversalContextUnpacker,
-    GrasshopperColorUnpacker colorUnpacker,
-    GrasshopperMaterialUnpacker materialUnpacker,
    GrasshopperCollectionRebuilder collectionRebuilder,
-    IReadOnlyCollection<InstanceDefinitionProxy>? definitionProxies
+    GrasshopperColorUnpacker colorUnpacker,
+    GrasshopperMaterialUnpacker materialUnpacker
  )
  {
    _traversalContextUnpacker = traversalContextUnpacker;
    _colorUnpacker = colorUnpacker;
    _materialUnpacker = materialUnpacker;
    CollectionRebuilder = collectionRebuilder;
-    _definitionProxies = definitionProxies;
-
-    return this;
  }

  /// <summary>
-  /// Converts all atomic objects in two passes:
-  /// Pass 1 - Convert normal objects and populate ConvertedObjectsMap
-  /// Pass 2 - Resolve registered DataObjects with InstanceProxies using the populated map
+  /// Converts atomic object from TraversalContext to SpeckleObjectWrapper.
  /// </summary>
-  public void ConvertAtomicObjects(IEnumerable<TraversalContext> atomicContexts)
-  {
-    // Cache to avoid re-iterating for registered check
-    var atomicList = atomicContexts as IList<TraversalContext> ?? atomicContexts.ToList();
-
-    // Pass 1: Convert all non-registered DataObjects to populate ConvertedObjectsMap
-    foreach (var atomicContext in atomicList)
-    {
-      ConvertObjectToCache(atomicContext);
-    }
-
-    // Pass 2: Process registered DataObjects (definitions now available in ConvertedObjectsMap)
-    foreach (var atomicContext in atomicList)
-    {
-      if (atomicContext.Current is DataObject dataObject)
-      {
-        var dataObjectId = dataObject.applicationId ?? dataObject.id;
-        if (dataObjectId is not null && _dataObjectInstanceRegistry.IsRegistered(dataObjectId))
-        {
-          ResolveDataObjectInstanceProxies(atomicContext);
-        }
-      }
-    }
-  }
-
-  /// <summary>
-  /// Converts and caches an atomic object for later lookup.
-  /// Skips registered DataObjects (displayValue is InstanceProxy) - they are resolved in ResolveDataObjectInstanceProxies.
-  /// </summary>
-  private void ConvertObjectToCache(TraversalContext atomicContext)
+  public void ConvertAtomicObject(TraversalContext atomicContext)
  {
    var obj = atomicContext.Current;
    var objId = obj.applicationId ?? obj.id;

-    if (objId is null || ConvertedObjectsMap.ContainsKey(objId))
+    if (objId == null || ConvertedObjectsMap.ContainsKey(objId))
    {
      return;
    }

-    // skip registered DataObjects - they'll be processed in second pass
-    if (obj is DataObject dataObject)
-    {
-      var id = dataObject.applicationId ?? dataObject.id.NotNull();
-      if (_dataObjectInstanceRegistry.IsRegistered(id))
-      {
-        return;
-      }
-    }
-
    try
    {
      List<(object, Base)> converted = SpeckleConversionContext.Current.ConvertToHost(obj);

-      // get path and collection
-      var path = _traversalContextUnpacker.GetCollectionPath(atomicContext).ToList();
-      var objectCollection = CollectionRebuilder.GetOrCreateSpeckleCollectionFromPath(
-        path,
-        _colorUnpacker,
-        _materialUnpacker
-      );
-
-      // nothing converted - nothing to do
      if (converted.Count == 0)
      {
        return;
      }

-      // handle normal DataObject (has converted geometry)
-      if (obj is DataObject normalDataObject)
-      {
-        var geometries = ConvertToGeometryWrappers(converted);
-        var dataObjectWrapper = CreateDataObjectWrapper(normalDataObject, geometries, path, objectCollection);
-
-        CollectionRebuilder.AppendSpeckleGrasshopperObject(dataObjectWrapper, path, _colorUnpacker, _materialUnpacker);
-        return;
-      }
-
-      // handle normal geometry (not DataObject)
-      SpecklePropertyGroupGoo propertyGroup = new();
-      if (obj[Constants.PROPERTIES_PROP] is Dictionary<string, object?> props)
-      {
-        propertyGroup.CastFrom(props);
-      }
-
-      foreach ((object convertedObj, Base original) in converted)
-      {
-        if (convertedObj is GeometryBase geometryBase)
-        {
-          var wrapper = new SpeckleGeometryWrapper()
-          {
-            Base = original,
-            Path = path.Select(p => p.name).ToList(),
-            Parent = objectCollection,
-            GeometryBase = geometryBase,
-            Properties = propertyGroup,
-            Name = obj[Constants.NAME_PROP] as string ?? "",
-            Color = _colorUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjColor)
-              ? cachedObjColor
-              : null,
-            Material = _materialUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjMaterial)
-              ? cachedObjMaterial
-              : null,
-            ApplicationId = objId
-          };
-
-          ConvertedObjectsMap[objId] = wrapper;
-          CollectionRebuilder.AppendSpeckleGrasshopperObject(wrapper, path, _colorUnpacker, _materialUnpacker);
-        }
-      }
-    }
-    catch (Exception ex) when (!ex.IsFatal())
-    {
-      // don't throw - continue processing other objects
-      _logger.LogError(ex, "Failed to convert object {objectId} of type {objectType}", objId, obj.speckle_type);
-    }
-  }
-
-  /// <summary>
-  /// Resolves a registered DataObject by transforming its InstanceProxy definition objects.
-  /// Requires definition objects to exist in ConvertedObjectsMap (populated by ConvertObjectToCache).
-  /// </summary>
-  private void ResolveDataObjectInstanceProxies(TraversalContext atomicContext)
-  {
-    var obj = atomicContext.Current;
-    if (obj is not DataObject dataObject)
-    {
-      return;
-    }
-
-    var dataObjectId = dataObject.applicationId ?? dataObject.id.NotNull();
-    if (!_dataObjectInstanceRegistry.IsRegistered(dataObjectId))
-    {
-      return;
-    }
-
-    try
-    {
      var path = _traversalContextUnpacker.GetCollectionPath(atomicContext).ToList();
+
+      // Always create collection - consumed objects will be cleaned up later
      var objectCollection = CollectionRebuilder.GetOrCreateSpeckleCollectionFromPath(
        path,
        _colorUnpacker,
        _materialUnpacker
      );

-      var entry = _dataObjectInstanceRegistry.GetEntries()[dataObjectId];
-      var resolvedGeometries = ResolveInstanceProxiesToGeometries(entry.InstanceProxies);
-      var dataObjectWrapper = CreateDataObjectWrapper(dataObject, resolvedGeometries, path, objectCollection);
+      if (obj is Speckle.Objects.Data.DataObject dataObject)
+      {
+        // get color and mat on dataobject first
+        Color? dataObjColor = _colorUnpacker.Cache.TryGetValue(
+          dataObject.applicationId ?? "",
+          out var cachedDataObjColor
+        )
+          ? cachedDataObjColor
+          : null;

-      CollectionRebuilder.AppendSpeckleGrasshopperObject(dataObjectWrapper, path, _colorUnpacker, _materialUnpacker);
+        SpeckleMaterialWrapper? dataObjMat = _materialUnpacker.Cache.TryGetValue(
+          dataObject.applicationId ?? "",
+          out var cachedDataObjMaterial
+        )
+          ? cachedDataObjMaterial
+          : null;
+
+        // get geometries
+        List<SpeckleGeometryWrapper> geometries = new();
+        foreach ((object convertedObj, Base original) in converted)
+        {
+          if (convertedObj is GeometryBase geometryBase)
+          {
+            SpeckleGeometryWrapper wrapper =
+              new()
+              {
+                Base = original,
+                GeometryBase = geometryBase,
+                Color = _colorUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjColor)
+                  ? cachedObjColor
+                  : dataObjColor,
+                Material = _materialUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjMaterial)
+                  ? cachedObjMaterial
+                  : dataObjMat,
+              };
+
+            geometries.Add(wrapper);
+          }
+        }
+
+        SpecklePropertyGroupGoo propertyGroup = new();
+        propertyGroup.CastFrom(dataObject.properties);
+
+        // remove the displayvalue of the original dataobject since these are now processed and stored on the wrapper
+        // to prevent storing of duplicate Base
+        dataObject.displayValue.Clear();
+
+        var dataObjectWrapper = new SpeckleDataObjectWrapper()
+        {
+          Base = dataObject,
+          Geometries = geometries,
+          Path = path.Select(p => p.name).ToList(),
+          Parent = objectCollection,
+          Name = dataObject.name,
+          Properties = propertyGroup,
+          ApplicationId = dataObject.applicationId,
+        };
+
+        // Add to collections (not to map since these won't be definition objects)
+        CollectionRebuilder.AppendSpeckleGrasshopperObject(dataObjectWrapper, path, _colorUnpacker, _materialUnpacker);
+      }
+      else
+      {
+        SpecklePropertyGroupGoo propertyGroup = new();
+        if (obj[Constants.PROPERTIES_PROP] is Dictionary<string, object?> props)
+        {
+          propertyGroup.CastFrom(props);
+        }
+
+        foreach ((object convertedObj, Base original) in converted)
+        {
+          if (convertedObj is GeometryBase geometryBase)
+          {
+            var wrapper = new SpeckleGeometryWrapper()
+            {
+              Base = original,
+              Path = path.Select(p => p.name).ToList(),
+              Parent = objectCollection,
+              GeometryBase = geometryBase,
+              Properties = propertyGroup,
+              Name = obj[Constants.NAME_PROP] as string ?? "",
+              Color = _colorUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjColor)
+                ? cachedObjColor
+                : null,
+              Material = _materialUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjMaterial)
+                ? cachedObjMaterial
+                : null,
+              ApplicationId = objId
+            };
+
+            // Always add to both map and collections
+            ConvertedObjectsMap[objId] = wrapper;
+            CollectionRebuilder.AppendSpeckleGrasshopperObject(wrapper, path, _colorUnpacker, _materialUnpacker);
+          }
+        }
+      }
    }
    catch (Exception ex) when (!ex.IsFatal())
    {
-      // don't throw - continue processing other DataObjects
-      _logger.LogError(ex, "Failed to resolve DataObject {dataObjectId} with InstanceProxies", dataObjectId);
+      // TODO: throw?
    }
  }

  /// <summary>
  /// Converts block instances and definitions from traversal contexts into Grasshopper wrapper objects.
-  /// Automatically filters out InstanceProxies belonging to registered DataObjects.
  /// Automatically handles cleanup of consumed objects from the collection hierarchy.
  /// </summary>
-  public void ConvertBlockInstances(IReadOnlyCollection<TraversalContext> blockInstances)
+  /// <remarks>
+  /// Deliberately handles both block conversion AND consumed object cleanup in a single operation.
+  /// Too much, I know, BUT it ensures the cleanup always occurs immediately after block processing without
+  /// requiring receive components to call a separate cleanup method in the correct order.
+  /// </remarks>
+  public void ConvertBlockInstances(
+    IReadOnlyCollection<TraversalContext> blocks,
+    IReadOnlyCollection<InstanceDefinitionProxy>? definitionProxies
+  )
  {
-    // build set of registered InstanceProxy IDs for fast lookup
-    var registeredProxyIds = new HashSet<string>();
-    foreach (var entry in _dataObjectInstanceRegistry.GetEntries().Values)
-    {
-      foreach (var proxy in entry.InstanceProxies)
-      {
-        var proxyId = proxy.applicationId ?? proxy.id;
-        if (proxyId is not null)
-        {
-          registeredProxyIds.Add(proxyId);
-        }
-      }
-    }
-
-    // filter out InstanceProxies that belong to registered DataObjects
-    var filteredBlockInstances = blockInstances
-      .Where(tc =>
-      {
-        if (tc.Current is InstanceProxy proxy)
-        {
-          var proxyId = proxy.applicationId ?? proxy.id;
-          return proxyId is null || !registeredProxyIds.Contains(proxyId);
-        }
-        return true;
-      })
-      .ToList();
-
    var blockUnpacker = new GrasshopperBlockUnpacker(_traversalContextUnpacker, _colorUnpacker, _materialUnpacker);

-    // get consumed object IDs from unpacker
+    // Get consumed object IDs from unpacker
    var consumedObjectIds = blockUnpacker.UnpackBlocks(
-      filteredBlockInstances,
-      _definitionProxies,
+      blocks,
+      definitionProxies,
      ConvertedObjectsMap,
      CollectionRebuilder
    );

-    // clean up consumed objects from collections
+    // Clean up consumed objects from collections
    CollectionRebuilder.RemoveConsumedObjects(consumedObjectIds);
  }
-
-  /// <summary>
-  /// Creates a DataObjectWrapper from a DataObject and its geometries.
-  /// Handles color/material inheritance and property extraction.
-  /// </summary>
-  private SpeckleDataObjectWrapper CreateDataObjectWrapper(
-    DataObject dataObject,
-    List<SpeckleGeometryWrapper> geometries,
-    List<Collection> path,
-    SpeckleCollectionWrapper objectCollection
-  )
-  {
-    // Get color and material on DataObject
-    Color? dataObjColor = _colorUnpacker.Cache.TryGetValue(dataObject.applicationId ?? "", out var cachedDataObjColor)
-      ? cachedDataObjColor
-      : null;
-
-    SpeckleMaterialWrapper? dataObjMat = _materialUnpacker.Cache.TryGetValue(
-      dataObject.applicationId ?? "",
-      out var cachedDataObjMaterial
-    )
-      ? cachedDataObjMaterial
-      : null;
-
-    // Apply DataObject color/material to geometries that don't have their own
-    foreach (var geometry in geometries)
-    {
-      geometry.Color ??= dataObjColor;
-      geometry.Material ??= dataObjMat;
-    }
-
-    // Create property group
-    SpecklePropertyGroupGoo propertyGroup = new();
-    propertyGroup.CastFrom(dataObject.properties);
-
-    // Clear the displayValue to prevent storing duplicate Base
-    dataObject.displayValue.Clear();
-
-    return new SpeckleDataObjectWrapper()
-    {
-      Base = dataObject,
-      Geometries = geometries,
-      Path = path.Select(p => p.name).ToList(),
-      Parent = objectCollection,
-      Name = dataObject.name,
-      Properties = propertyGroup,
-      ApplicationId = dataObject.applicationId,
-    };
-  }
-
-  /// <summary>
-  /// Resolves InstanceProxy displayValues to transformed geometries.
-  /// Returns the list of resolved geometries that can be used as DataObject displayValue replacements.
-  /// </summary>
-  private List<SpeckleGeometryWrapper> ResolveInstanceProxiesToGeometries(List<InstanceProxy> instanceProxies)
-  {
-    var resolvedGeometries = new List<SpeckleGeometryWrapper>();
-
-    // build a lookup of definitionId -> definition objects for quick access
-    var definitionObjectsMap = new Dictionary<string, List<string>>();
-    if (_definitionProxies is not null)
-    {
-      foreach (var defProxy in _definitionProxies)
-      {
-        var defId = defProxy.applicationId ?? defProxy.id;
-        if (defId is not null)
-        {
-          definitionObjectsMap[defId] = defProxy.objects;
-        }
-      }
-    }
-
-    foreach (var instanceProxy in instanceProxies)
-    {
-      // get the definition objects for this instance
-      if (!definitionObjectsMap.TryGetValue(instanceProxy.definitionId, out var definitionObjectIds))
-      {
-        continue; // definition not found, skip this proxy
-      }
-
-      // get transform from the instance proxy
-      var transform = GrasshopperHelpers.MatrixToTransform(instanceProxy.transform, instanceProxy.units);
-
-      // apply transform to each definition object
-      foreach (var objectId in definitionObjectIds)
-      {
-        if (ConvertedObjectsMap.TryGetValue(objectId, out var definitionObject))
-        {
-          // deep copy and transform the geometry
-          var transformedWrapper = definitionObject.DeepCopy();
-
-          // transform the GeometryBase
-          transformedWrapper.GeometryBase.NotNull().Transform(transform);
-
-          // keep Base and GeometryBase in sync (CNX-2847)
-          // Exception shouldn't ever happen for objects in ConvertedObjectsMap
-          transformedWrapper.Base =
-            SpeckleConversionContext.Current.ConvertToSpeckle(transformedWrapper.GeometryBase)
-            ?? throw new InvalidOperationException($"Failed to convert transformed geometry for object {objectId}");
-
-          // preserve metadata from original Base
-          transformedWrapper.Base.applicationId = definitionObject.Base.applicationId;
-          transformedWrapper.Base["units"] = _settingsStore.Current.SpeckleUnits;
-
-          resolvedGeometries.Add(transformedWrapper);
-        }
-      }
-    }
-
-    return resolvedGeometries;
-  }
-
-  /// <summary>
-  /// Converts the raw converted objects to SpeckleGeometryWrappers for DataObject display values.
-  /// Does NOT apply DataObject-level colors/materials - that's handled by CreateDataObjectWrapper.
-  /// </summary>
-  private List<SpeckleGeometryWrapper> ConvertToGeometryWrappers(List<(object, Base)> converted)
-  {
-    var geometries = new List<SpeckleGeometryWrapper>();
-
-    foreach ((object convertedObj, Base original) in converted)
-    {
-      if (convertedObj is GeometryBase geometryBase)
-      {
-        SpeckleGeometryWrapper wrapper =
-          new()
-          {
-            Base = original,
-            GeometryBase = geometryBase,
-            // try to get color/material from the individual geometry first
-            Color = _colorUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjColor)
-              ? cachedObjColor
-              : null,
-            Material = _materialUnpacker.Cache.TryGetValue(original.applicationId ?? "", out var cachedObjMaterial)
-              ? cachedObjMaterial
-              : null,
-          };
-
-        geometries.Add(wrapper);
-      }
-    }
-
-    return geometries;
-  }
 }
@@ -35,15 +35,9 @@ public class GrasshopperRootObjectBuilder : IRootObjectBuilder<SpeckleCollection
    CancellationToken ct = default
  )
  {
-    // create root collection
-    var rootCollectionGoo = (SpeckleRootCollectionWrapperGoo)input[0].Duplicate();
-    rootCollectionGoo.Value.Name = "Grasshopper Model";
-    RootCollection rootCollection =
-      new(rootCollectionGoo.Value.Name)
-      {
-        applicationId = rootCollectionGoo.Value.ApplicationId,
-        properties = rootCollectionGoo.Value.Properties ?? new()
-      };
+    // deep copy input (to not mutate input) and set the input collection name to "Grasshopper Model"
+    var inputCollectionGoo = (SpeckleCollectionWrapperGoo)input[0].Duplicate();
+    inputCollectionGoo.Value.Name = "Grasshopper Model";

    // create packers for colors and render materials
    GrasshopperColorPacker colorPacker = new();
@@ -51,15 +45,15 @@ public class GrasshopperRootObjectBuilder : IRootObjectBuilder<SpeckleCollection
    GrasshopperBlockPacker blockPacker = new(_instanceObjectsManager);

    // unwrap the input collection to remove all wrappers
-    Unwrap(rootCollectionGoo.Value, rootCollection, colorPacker, materialPacker, blockPacker);
+    Collection root = Unwrap(inputCollectionGoo.Value, colorPacker, materialPacker, blockPacker);

    // add proxies
-    rootCollection[ProxyKeys.COLOR] = colorPacker.ColorProxies.Values.ToList();
-    rootCollection[ProxyKeys.RENDER_MATERIAL] = materialPacker.RenderMaterialProxies.Values.ToList();
-    rootCollection[ProxyKeys.INSTANCE_DEFINITION] = blockPacker.InstanceDefinitionProxies.Values.ToList();
+    root[ProxyKeys.COLOR] = colorPacker.ColorProxies.Values.ToList();
+    root[ProxyKeys.RENDER_MATERIAL] = materialPacker.RenderMaterialProxies.Values.ToList();
+    root[ProxyKeys.INSTANCE_DEFINITION] = blockPacker.InstanceDefinitionProxies.Values.ToList();

    // TODO: Not getting any conversion results yet
-    var result = new RootObjectBuilderResult(rootCollection, []);
+    var result = new RootObjectBuilderResult(root, []);

    return Task.FromResult(result);
  }
@@ -68,47 +62,42 @@ public class GrasshopperRootObjectBuilder : IRootObjectBuilder<SpeckleCollection
  // Also packs colors, render materials and block definitions into proxies while unwrapping.
  private Collection Unwrap(
    SpeckleCollectionWrapper wrapper,
-    Collection targetCollection,
    GrasshopperColorPacker colorPacker,
    GrasshopperMaterialPacker materialPacker,
    GrasshopperBlockPacker blockPacker
  )
  {
+    Collection currentColl = wrapper.Collection;
+
    // unpack color, render material and block definitions
    colorPacker.ProcessColor(wrapper.ApplicationId, wrapper.Color);
    materialPacker.ProcessMaterial(wrapper.ApplicationId, wrapper.Material);

-    int skippedNulls = 0;
-
    // iterate through this wrapper's elements to unwrap children
    // HashSet<string> collObjectIds = new();
-    foreach (ISpeckleCollectionObject? element in wrapper.Elements)
+    foreach (ISpeckleCollectionObject element in wrapper.Elements)
    {
      switch (element)
      {
-        case null:
-          // CNX-2855: count skipped nulls and obvs don't add to collection (can't send nulls)
-          skippedNulls++;
-          continue;
        case SpeckleCollectionWrapper collWrapper:
          // create an application id for this collection if none exists. This will be used for color and render material proxies
          collWrapper.ApplicationId ??= collWrapper.GetSpeckleApplicationId();

          // add to collection and continue unwrap
-          targetCollection.elements.Add(collWrapper.Collection);
-          Unwrap(collWrapper, collWrapper.Collection, colorPacker, materialPacker, blockPacker);
+          currentColl.elements.Add(collWrapper.Collection);
+          Unwrap(collWrapper, colorPacker, materialPacker, blockPacker);
          break;

        case SpeckleGeometryWrapper so: // handles both SpeckleObjectWrapper and SpeckleBlockInstanceWrapper (inheritance)
          // convert wrapper to base and add to collection - common for all object wrappers
          Base objectBase = UnwrapGeometry(so);
          string applicationId = objectBase.applicationId!;
-          targetCollection.elements.Add(objectBase);
+          currentColl.elements.Add(objectBase);

          // do block instance specific stuff (if this object wrapper is actually a block instance)
          if (so is SpeckleBlockInstanceWrapper blockInstance)
          {
-            ProcessBlockInstanceDefinition(blockInstance, colorPacker, materialPacker, blockPacker, targetCollection);
+            ProcessBlockInstanceDefinition(blockInstance, colorPacker, materialPacker, blockPacker, currentColl);
          }

          // process color and material for all object wrappers (including block instances)
@@ -121,7 +110,7 @@ public class GrasshopperRootObjectBuilder : IRootObjectBuilder<SpeckleCollection
          // UnwrapDataObject will unwrap underlying geometry and handle color and material
          // arguably doing too much, but I'm apprehensive looping twice without good reason
          DataObject dataObject = UnwrapDataObject(dataObjectWrapper, colorPacker, materialPacker);
-          targetCollection.elements.Add(dataObject);
+          currentColl.elements.Add(dataObject);
          break;
      }
    }
@@ -138,14 +127,7 @@ public class GrasshopperRootObjectBuilder : IRootObjectBuilder<SpeckleCollection
    }
    */

-    // clear topology when nulls are present - no simple way to preserve tree structure since Collection.elements
-    // doesn't support nulls on publish. Topology is GH-specific and optional, so clearing it is safe. (CNX-2855)
-    if (skippedNulls > 0)
-    {
-      targetCollection[Constants.TOPOLOGY_PROP] = null;
-    }
-
-    return targetCollection;
+    return currentColl;
  }

  /// <summary>
--- a/Show More
+++ b/Show More