feat(grasshopper): adds isDesignOption flag (#1365 )

fix(revit): Lighting source material is included in the material quantities (#1361 )
* exclude default light source material * move the check inside TryAddMaterialPropertiesToQuantitiesDict as an early return * go simple
2026-04-13 16:11:00 +02:00 · 2026-04-10 15:59:26 +03:00 · 2026-04-09 19:19:32 +00:00 · 2026-04-08 11:42:24 +01:00 · 2026-04-08 11:27:57 +01:00 · 2026-04-08 11:27:22 +01:00
470 changed files with 17258 additions and 6343 deletions
@@ -6,34 +6,34 @@

 # Connectors

-/Connectors/ArcGIS/* @KatKatKateryna
-/Connectors/Autocad/* @clairekuang @oguzhankoral @didimitrie
-/Connectors/Civil3d/* @clairekuang @oguzhankoral @didimitrie
+/Connectors/Autocad/* @oguzhankoral @JR-Morgan @dogukankaratas
+/Connectors/Civil3d/* @oguzhankoral @JR-Morgan @dogukankaratas
 /Connectors/CSi/* @bjoernsteinhagen @dogukankaratas
 /Connectors/Navisworks/* @jsdbroughton
-/Connectors/Revit/* @clairekuang @oguzhankoral @didimitrie
-/Connectors/Rhino/* @clairekuang @oguzhankoral @didimitrie
+/Connectors/Revit/* @oguzhankoral
+/Connectors/Rhino/* @oguzhankoral @JR-Morgan
 /Connectors/Tekla/* @bjoernsteinhagen @dogukankaratas

 # Converters
-/Convertors/ArcGIS/* @KatKatKateryna
-/Convertors/Autocad/* @clairekuang @oguzhankoral @didimitrie
-/Convertors/Civil3d/* @clairekuang @oguzhankoral @didimitrie
+/Convertors/Autocad/* @oguzhankoral @JR-Morgan @dogukankaratas
+/Convertors/Civil3d/* @oguzhankoral @JR-Morgan @dogukankaratas
 /Convertors/CSi/* @bjoernsteinhagen @dogukankaratas
 /Convertors/Navisworks/* @jsdbroughton
-/Convertors/Revit/* @clairekuang @oguzhankoral @didimitrie
-/Convertors/Rhino/* @clairekuang @oguzhankoral @didimitrie
+/Convertors/Revit/* @oguzhankoral
+/Convertors/Rhino/* @oguzhankoral @JR-Morgan
 /Convertors/Tekla/* @bjoernsteinhagen @dogukankaratas

 # DUI

-/DUI3/* @clairekuang @oguzhankoral @didimitrie
+/DUI3/* @oguzhankoral

 # Importers
-/Importers/* @JR-Morgan @didimitrie @oguzhankoral @adamhathcock
+/Importers/* @JR-Morgan @oguzhankoral

 # SDK
-/SDK/* @JR-Morgan @clairekuang @didimitrie @oguzhankoral @adamhathcock
+/SDK/* @JR-Morgan @oguzhankoral

 # Build
-/Build/* @JR-Morgan @oguzhankoral @adamhathcock
+/Build/* @JR-Morgan @oguzhankoral
+/.github/* @JR-Morgan @oguzhankoral
+/.config/* @JR-Morgan @oguzhankoral
@@ -20,7 +20,7 @@ jobs:
          dotnet-version: 8.0.4xx # Align with global.json (including roll forward rules)

      - name: Cache Nuget
-        uses: actions/cache@v4
+        uses: actions/cache@v5
        with:
          path: ~/.nuget/packages
          key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
@@ -29,7 +29,7 @@ jobs:
        run: ./build.sh test-and-pack

      - name: Upload coverage reports to Codecov with GitHub Action
-        uses: codecov/codecov-action@v5
+        uses: codecov/codecov-action@v6
        with:
          files: Converters/**/coverage.xml
          token: ${{ secrets.CODECOV_TOKEN }}
@@ -26,7 +26,7 @@ jobs:
          dotnet-version: 8.0.4xx # Align with global.json (including roll forward rules)

      - name: Cache Nuget
-        uses: actions/cache@v4
+        uses: actions/cache@v5
        with:
          path: ~/.nuget/packages
          key: ${{ runner.os }}-nuget-${{ hashFiles('**/packages.lock.json') }}
@@ -35,7 +35,7 @@ jobs:
        run: ./build.ps1 zip

      - name: ⬆️ Upload artifacts
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v7
        with:
          name: output-${{ env.SEMVER }}
          path: output/*.*
@@ -48,7 +48,7 @@ jobs:
        run: |
          echo "semver=${{ env.SEMVER }}" >> "$Env:GITHUB_OUTPUT"
          echo "file_version=${{ env.FILE_VERSION }}" >> "$Env:GITHUB_OUTPUT"
-          
+
  deploy-installers:
    runs-on: ubuntu-latest
    needs: build-connectors
@@ -56,7 +56,7 @@ jobs:
      IS_PUBLIC_RELEASE: ${{ github.ref_type == 'tag' }}
    steps:
      - name: 🔫 Trigger Build Installers
-        uses: the-actions-org/workflow-dispatch@v4.0.0
+        uses: benc-uk/workflow-dispatch@v1
        with:
          workflow: Build Installers
          repo: specklesystems/connector-installers
@@ -70,12 +70,10 @@ jobs:
            }'
          ref: main
          wait-for-completion: true
-          wait-for-completion-interval: 10s
-          wait-for-completion-timeout: 10m
-          display-workflow-run-url: true
-          display-workflow-run-url-interval: 10s
-      
+          sync-status: true
+        timeout-minutes: 15
+
      # Allows us to inspect the artifacts of failed builds, since this below step will be skipped if the above step fails
-      - uses: geekyeggo/delete-artifact@v5
+      - uses: geekyeggo/delete-artifact@v6
        with:
          name: output-*
@@ -21,3 +21,5 @@ tools
 coverage.xml
 output/
 Images/Thumbs.db
+
+.claude/
@@ -43,6 +43,7 @@ public static class Consts
        new("Connectors/Autocad/Speckle.Connectors.Civil3d2026", "net8.0-windows")
      ]
    ),
+    new("plant3d", [new("Connectors/Autocad/Speckle.Connectors.Plant3d2026", "net8.0-windows")]),
    new(
      "navisworks",
      [
@@ -1,4 +1,4 @@
 CA1502: 25
 CA1501: 5
-CA1506(Method): 50
+CA1506(Method): 60
 CA1506(Type): 95
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project>
  <Target AfterTargets="Clean" Name="CleanAddinAutocad" Condition="'$(AutoCADVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
-    <RemoveDir Directories="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Autocad$(AutoCADVersion);" />
+    <RemoveDir Directories="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Autocad.bundle\Contents\Windows\Speckle.Connectors.Autocad$(AutoCADVersion);" />
  </Target>

  <Target AfterTargets="Build"  Name="AfterBuildAutoCAD" Condition="'$(AutoCADVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
@@ -9,11 +9,12 @@
      <AutoCADDLLs Include="$(TargetDir)\**\*.*" />
    </ItemGroup>
    <Message Text="AutoCAD Version $(AutoCADVersion)" Importance="high"/>
-    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Autocad$(AutoCADVersion)\%(RecursiveDir)" SourceFiles="@(AutoCADDLLs)" />
+    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Autocad.bundle\Contents\Windows\Speckle.Connectors.Autocad$(AutoCADVersion)\%(RecursiveDir)" SourceFiles="@(AutoCADDLLs)" />
+    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Autocad.bundle\" SourceFiles="$(TargetDir)\Plugin\BundleAutoCAD\PackageContents.xml" />
  </Target>

  <Target AfterTargets="Clean" Name="CleanAddinCivil3D" Condition="'$(Civil3DVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
-    <RemoveDir Directories="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Civil3d$(Civil3DVersion);" />
+    <RemoveDir Directories="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Civil3d.bundle\Contents\Windows\Speckle.Connectors.Civil3d$(Civil3DVersion);" />
  </Target>

  <Target AfterTargets="Build"  Name="AfterBuildCivil3D" Condition="'$(Civil3DVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
@@ -21,7 +22,8 @@
      <Civil3DDLLs Include="$(TargetDir)\**\*.*" />
    </ItemGroup>
    <Message Text="Civil3D Version $(Civil3DVersion)" Importance="high"/>
-    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Civil3d$(Civil3DVersion)\%(RecursiveDir)" SourceFiles="@(Civil3DDLLs)" />
+    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Civil3d.bundle\Contents\Windows\Speckle.Connectors.Civil3d$(Civil3DVersion)\%(RecursiveDir)" SourceFiles="@(Civil3DDLLs)" />
+    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Civil3d.bundle\" SourceFiles="$(TargetDir)\Plugin\BundleCivil3D\PackageContents.xml" />
  </Target>

  <PropertyGroup Condition="'$(AutoCADVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
@@ -33,4 +35,23 @@
    <StartProgram>$(ProgramW6432)\Autodesk\AutoCAD $(Civil3DVersion)\acad.exe</StartProgram>
    <StartArguments>/product C3D</StartArguments>
  </PropertyGroup>
+
+  <Target AfterTargets="Clean" Name="CleanAddinPlant3D" Condition="'$(Plant3DVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
+    <RemoveDir Directories="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Plant3d.bundle\Contents\Windows\Speckle.Connectors.Plant3d$(Plant3DVersion);" />
+  </Target>
+
+  <Target AfterTargets="Build"  Name="AfterBuildPlant3D" Condition="'$(Plant3DVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
+    <ItemGroup>
+      <Plant3DDLLs Include="$(TargetDir)\**\*.*" />
+    </ItemGroup>
+    <Message Text="Plant3D Version $(Plant3DVersion)" Importance="high"/>
+    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Plant3d.bundle\Contents\Windows\Speckle.Connectors.Plant3d$(Plant3DVersion)\%(RecursiveDir)" SourceFiles="@(Plant3DDLLs)" />
+    <Copy DestinationFolder="$(AppData)\Autodesk\ApplicationPlugins\Speckle.Connectors.Plant3d.bundle\" SourceFiles="$(TargetDir)\Plugin\BundlePlant3D\PackageContents.xml" />
+  </Target>
+
+  <PropertyGroup Condition="'$(Plant3DVersion)' != '' And '$(ContinuousIntegrationBuild)' != 'true' And '$(OS)' == 'Windows_NT'">
+    <StartAction>Program</StartAction>
+    <StartProgram>$(ProgramW6432)\Autodesk\AutoCAD $(Plant3DVersion)\acad.exe</StartProgram>
+    <StartArguments>/product PLNT3D</StartArguments>
+  </PropertyGroup>
 </Project>
@@ -73,8 +73,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -169,6 +169,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4"
+        }
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -260,9 +283,7 @@
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -293,7 +314,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -337,35 +358,12 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    }
  }
@@ -73,8 +73,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -169,6 +169,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4"
+        }
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -260,9 +283,7 @@
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -293,7 +314,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -337,35 +358,12 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    }
  }
@@ -73,8 +73,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -169,6 +169,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4"
+        }
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -260,9 +283,7 @@
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -294,7 +315,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -338,35 +359,12 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    }
  }
@@ -155,6 +155,25 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w=="
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -211,9 +230,7 @@
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -245,7 +262,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -289,33 +306,12 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -155,6 +155,25 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w=="
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -211,9 +230,7 @@
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -245,7 +262,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -289,33 +306,12 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -1,6 +1,7 @@
 using System.Collections.Concurrent;
 using System.Diagnostics.CodeAnalysis;
 using Autodesk.AutoCAD.DatabaseServices;
+using Autodesk.AutoCAD.Geometry;
 using Speckle.Connectors.Autocad.HostApp.Extensions;
 using Speckle.Connectors.Common.Caching;
 using Speckle.Connectors.Common.Cancellation;
@@ -40,6 +41,9 @@ public abstract class AutocadSendBaseBinding : ISendBinding
  /// </summary>
  private ConcurrentBag<string> ChangedObjectIds { get; set; } = new();

+  private readonly List<string> _docSubsTracker = new();
+  private readonly Dictionary<string, Matrix3d> _docUcsTracker = new();
+
  protected AutocadSendBaseBinding(
    DocumentModelStore store,
    IBrowserBridge parent,
@@ -71,6 +75,10 @@ public abstract class AutocadSendBaseBinding : ISendBinding
      // catches the case when autocad just opens up with a blank new doc
      SubscribeToObjectChanges(Application.DocumentManager.CurrentDocument);
    }
+
+    Application.SystemVariableChanged += (_, e) =>
+      _topLevelExceptionHandler.CatchUnhandled(() => OnSystemVariableChanged(e));
+
    // Since ids of the objects generates from same seed, we should clear the cache always whenever doc swapped.
    _store.DocumentChanged += (_, _) =>
    {
@@ -78,8 +86,6 @@ public abstract class AutocadSendBaseBinding : ISendBinding
    };
  }

-  private readonly List<string> _docSubsTracker = new();
-
  private void SubscribeToObjectChanges(Document doc)
  {
    if (doc == null || doc.Database == null || _docSubsTracker.Contains(doc.Name))
@@ -88,11 +94,58 @@ public abstract class AutocadSendBaseBinding : ISendBinding
    }

    _docSubsTracker.Add(doc.Name);
+    _docUcsTracker[doc.Name] = doc.Editor.CurrentUserCoordinateSystem;
+
    doc.Database.ObjectAppended += (_, e) => OnObjectChanged(e.DBObject);
    doc.Database.ObjectErased += (_, e) => OnObjectChanged(e.DBObject);
    doc.Database.ObjectModified += (_, e) => OnObjectChanged(e.DBObject);
  }

+  /// <summary>
+  /// Handles system variable changes to detect UCS modifications.
+  /// When UCS changes, clears the conversion cache and expires all sender model cards.
+  /// </summary>
+  private void OnSystemVariableChanged(Autodesk.AutoCAD.ApplicationServices.SystemVariableChangedEventArgs e)
+  {
+    // check if this is a UCS-defining system variable
+    string varName = e.Name.ToUpperInvariant();
+    bool isUcsChange = varName == "UCSNAME" || varName == "UCSORG" || varName == "UCSXDIR" || varName == "UCSYDIR";
+
+    if (!isUcsChange)
+    {
+      return;
+    }
+
+    // get the currently active document
+    Document doc = Application.DocumentManager.MdiActiveDocument;
+    if (doc == null)
+    {
+      return;
+    }
+
+    var currentUcs = doc.Editor.CurrentUserCoordinateSystem;
+
+    // first time tracking this document's UCS
+    if (!_docUcsTracker.TryGetValue(doc.Name, out Matrix3d storedUcs))
+    {
+      _docUcsTracker[doc.Name] = currentUcs;
+      return;
+    }
+
+    // ucs hasn't actually changed (multiple variables fire for single UCS change)
+    if (currentUcs.IsEqualTo(storedUcs))
+    {
+      return;
+    }
+
+    // ucs has changed - all cached conversions invalid
+    _sendConversionCache.ClearCache();
+    _docUcsTracker[doc.Name] = currentUcs;
+
+    // expire all sender model cards
+    _idleManager.SubscribeToIdle(nameof(ExpireAllSenders), async () => await ExpireAllSenders());
+  }
+
  private void OnObjectChanged(DBObject dbObject) =>
    _topLevelExceptionHandler.CatchUnhandled(() => OnChangeChangedObjectIds(dbObject));

@@ -123,6 +176,19 @@ public abstract class AutocadSendBaseBinding : ISendBinding
    ChangedObjectIds = new();
  }

+  /// <summary>
+  /// Expires all sender model cards when a global change occurs (like UCS change).
+  /// </summary>
+  private async Task ExpireAllSenders()
+  {
+    var senders = _store.GetSenders();
+    var expiredSenderIds = senders.Select(s => s.ModelCardId.NotNull()).ToList();
+    if (expiredSenderIds.Count > 0)
+    {
+      await Commands.SetModelsExpired(expiredSenderIds);
+    }
+  }
+
  public List<ISendFilter> GetSendFilters() => _sendFilters;

  public List<ICardSetting> GetSendSettings() => [];
@@ -145,7 +211,9 @@ public abstract class AutocadSendBaseBinding : ISendBinding
        Commands,
        modelCardId,
        (sp, card) => InitializeSettings(sp),
-        card => Application.DocumentManager.CurrentDocument.GetObjects(card.SendFilter.NotNull().RefreshObjectIds())
+        card => Application.DocumentManager.CurrentDocument.GetObjects(card.SendFilter.NotNull().RefreshObjectIds()),
+        Application.DocumentManager.CurrentDocument.Name,
+        null
      );
    }
    finally
@@ -18,6 +18,10 @@ public static class AutocadConnectorModule
    // Send
    serviceCollection.LoadSend();
    serviceCollection.AddScoped<IRootObjectBuilder<AutocadRootObject>, AutocadRootObjectBuilder>();
+    serviceCollection.AddScoped<
+      IRootContinuousTraversalBuilder<AutocadRootObject>,
+      AutocadContinuousTraversalBuilder
+    >();

    // Receive
    serviceCollection.LoadReceive();
@@ -1,9 +1,9 @@
 using Autodesk.AutoCAD.Colors;
 using Microsoft.Extensions.Logging;
-using Speckle.Connectors.Common.Operations;
 using Speckle.InterfaceGenerator;
 using Speckle.Sdk;
 using Speckle.Sdk.Models.Proxies;
+using Speckle.Sdk.Pipelines.Progress;
 using AutocadColor = Autodesk.AutoCAD.Colors.Color;

 namespace Speckle.Connectors.Autocad.HostApp;
@@ -5,7 +5,6 @@ using Microsoft.Extensions.Logging;
 using Speckle.Connectors.Autocad.HostApp.Extensions;
 using Speckle.Connectors.Common.Conversion;
 using Speckle.Connectors.Common.Instances;
-using Speckle.Connectors.Common.Operations;
 using Speckle.Converters.Autocad;
 using Speckle.Converters.Common;
 using Speckle.DoubleNumerics;
@@ -16,6 +15,7 @@ using Speckle.Sdk.Dependencies;
 using Speckle.Sdk.Models;
 using Speckle.Sdk.Models.Collections;
 using Speckle.Sdk.Models.Instances;
+using Speckle.Sdk.Pipelines.Progress;
 using AutocadColor = Autodesk.AutoCAD.Colors.Color;

 namespace Speckle.Connectors.Autocad.HostApp;
@@ -3,9 +3,9 @@ using Microsoft.Extensions.Logging;
 using Speckle.Connectors.Autocad.HostApp.Extensions;
 using Speckle.Connectors.Autocad.Operations.Send;
 using Speckle.Connectors.Common.Instances;
+using Speckle.Converters.Autocad.Helpers;
 using Speckle.Converters.AutocadShared.ToSpeckle;
 using Speckle.Converters.Common;
-using Speckle.DoubleNumerics;
 using Speckle.Sdk;
 using Speckle.Sdk.Models.Instances;

@@ -46,6 +46,7 @@ public class AutocadInstanceUnpacker : IInstanceUnpacker<AutocadRootObject>
      {
        UnpackInstance(blockReference, 0, transaction);
      }
+
      _instanceObjectsManager.AddAtomicObject(obj.ApplicationId, obj);
    }
    return _instanceObjectsManager.GetUnpackResult();
@@ -66,13 +67,14 @@ public class AutocadInstanceUnpacker : IInstanceUnpacker<AutocadRootObject>
        ? instance.AnonymousBlockTableRecord
        : instance.BlockTableRecord;

+      // transforms on instances are always stored in WCS
      InstanceProxy instanceProxy =
        new()
        {
          applicationId = instanceId,
          definitionId = definitionId.ToString(),
          maxDepth = depth,
-          transform = GetMatrix(instance.BlockTransform.ToArray()),
+          transform = TransformHelper.ConvertToInstanceMatrix4x4(instance.BlockTransform),
          units = _unitsConverter.ConvertOrThrow(Application.DocumentManager.CurrentDocument.Database.Insunits)
        };

@@ -173,6 +175,7 @@ public class AutocadInstanceUnpacker : IInstanceUnpacker<AutocadRootObject>
          UnpackInstance(blockReference, depth + 1, transaction);
        }

+        _instanceObjectsManager.AddAtomicDefinitionObjectId(appId);
        _instanceObjectsManager.AddAtomicObject(appId, new(obj, appId));
      }

@@ -183,7 +186,4 @@ public class AutocadInstanceUnpacker : IInstanceUnpacker<AutocadRootObject>
      _logger.LogError(ex, "Failed unpacking Autocad instance");
    }
  }
-
-  private Matrix4x4 GetMatrix(double[] t) =>
-    new(t[0], t[1], t[2], t[3], t[4], t[5], t[6], t[7], t[8], t[9], t[10], t[11], t[12], t[13], t[14], t[15]);
 }
@@ -3,12 +3,12 @@ using Autodesk.AutoCAD.DatabaseServices;
 using Autodesk.AutoCAD.GraphicsInterface;
 using Microsoft.Extensions.Logging;
 using Speckle.Connectors.Common.Conversion;
-using Speckle.Connectors.Common.Operations;
 using Speckle.InterfaceGenerator;
 using Speckle.Objects.Other;
 using Speckle.Sdk;
 using Speckle.Sdk.Common;
 using Speckle.Sdk.Models;
+using Speckle.Sdk.Pipelines.Progress;
 using Material = Autodesk.AutoCAD.DatabaseServices.Material;
 using RenderMaterial = Speckle.Objects.Other.RenderMaterial;

@@ -51,6 +51,12 @@ public class AutocadMaterialUnpacker

        if (transaction.GetObject(entity.MaterialId, OpenMode.ForRead) is Material material)
        {
+          // skip default material
+          if (material.Name == "Global")
+          {
+            continue;
+          }
+
          string materialId = material.GetSpeckleApplicationId();
          if (materialProxies.TryGetValue(materialId, out RenderMaterialProxy? value))
          {
@@ -77,6 +83,12 @@ public class AutocadMaterialUnpacker
      {
        if (transaction.GetObject(layer.MaterialId, OpenMode.ForRead) is Material material)
        {
+          // skip default material
+          if (material.Name == "Global")
+          {
+            continue;
+          }
+
          string materialId = material.GetSpeckleApplicationId();
          string layerId = layer.GetSpeckleApplicationId(); // Do not use handle directly, see note in the 'GetSpeckleApplicationId' method
          if (materialProxies.TryGetValue(materialId, out RenderMaterialProxy? value))
@@ -12,6 +12,7 @@ using Speckle.Sdk.Dependencies;
 using Speckle.Sdk.Models;
 using Speckle.Sdk.Models.Collections;
 using Speckle.Sdk.Models.Instances;
+using Speckle.Sdk.Pipelines.Progress;
 using AutocadColor = Autodesk.AutoCAD.Colors.Color;

 namespace Speckle.Connectors.Autocad.Operations.Receive;
@@ -0,0 +1,197 @@
+using System.Diagnostics.CodeAnalysis;
+using Autodesk.AutoCAD.DatabaseServices;
+using Microsoft.Extensions.Logging;
+using Speckle.Connectors.Autocad.HostApp;
+using Speckle.Connectors.Common.Builders;
+using Speckle.Connectors.Common.Caching;
+using Speckle.Connectors.Common.Conversion;
+using Speckle.Connectors.Common.Extensions;
+using Speckle.Connectors.Common.Operations;
+using Speckle.Converters.Common;
+using Speckle.Sdk;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Models.Instances;
+using Speckle.Sdk.Pipelines.Progress;
+using Speckle.Sdk.Pipelines.Send;
+
+namespace Speckle.Connectors.Autocad.Operations.Send;
+
+/// <summary>
+/// Abstract base class for AutoCAD continuous traversal builders that stream objects through a
+/// <see cref="SendPipeline"/> for packfile-based uploads. Same conversion logic as
+/// <see cref="AutocadRootObjectBaseBuilder"/>, but processes elements through the pipeline.
+/// </summary>
+public abstract class AutocadContinuousTraversalBaseBuilder : IRootContinuousTraversalBuilder<AutocadRootObject>
+{
+  private readonly IRootToSpeckleConverter _converter;
+  private readonly string[] _documentPathSeparator = ["\\"];
+  private readonly ISendConversionCache _sendConversionCache;
+  private readonly AutocadInstanceUnpacker _instanceUnpacker;
+  private readonly AutocadMaterialUnpacker _materialUnpacker;
+  private readonly AutocadColorUnpacker _colorUnpacker;
+  private readonly AutocadGroupUnpacker _groupUnpacker;
+  private readonly ILogger<AutocadRootObjectBuilder> _logger;
+  private readonly ISdkActivityFactory _activityFactory;
+
+  protected AutocadContinuousTraversalBaseBuilder(
+    IRootToSpeckleConverter converter,
+    ISendConversionCache sendConversionCache,
+    AutocadInstanceUnpacker instanceObjectManager,
+    AutocadMaterialUnpacker materialUnpacker,
+    AutocadColorUnpacker colorUnpacker,
+    AutocadGroupUnpacker groupUnpacker,
+    ILogger<AutocadRootObjectBuilder> logger,
+    ISdkActivityFactory activityFactory
+  )
+  {
+    _converter = converter;
+    _sendConversionCache = sendConversionCache;
+    _instanceUnpacker = instanceObjectManager;
+    _materialUnpacker = materialUnpacker;
+    _colorUnpacker = colorUnpacker;
+    _groupUnpacker = groupUnpacker;
+    _logger = logger;
+    _activityFactory = activityFactory;
+  }
+
+  [SuppressMessage(
+    "Maintainability",
+    "CA1506:Avoid excessive class coupling",
+    Justification = """
+      It is already simplified but has many different references since it is a builder. Do not know can we simplify it now.
+      Later we might consider to refactor proxies from one proxy manager? but we do not know the shape of it all potential
+      proxy classes yet. So I'm supressing this one now!!!
+      """
+  )]
+  public async Task<RootObjectBuilderResult> Build(
+    IReadOnlyList<AutocadRootObject> objects,
+    string projectId,
+    SendPipeline sendPipeline,
+    IProgress<CardProgress> onOperationProgressed,
+    CancellationToken cancellationToken
+  )
+  {
+    // 0 - Init the root
+    Collection root =
+      new()
+      {
+        name = Application
+          .DocumentManager.CurrentDocument.Name.Split(_documentPathSeparator, StringSplitOptions.None)
+          .Reverse()
+          .First()
+      };
+
+    Document doc = Application.DocumentManager.CurrentDocument;
+    using Transaction tr = doc.Database.TransactionManager.StartTransaction();
+
+    // 1 - Unpack the instances
+    var (atomicObjects, _, instanceProxies, instanceDefinitionProxies) = _instanceUnpacker.UnpackSelection(objects);
+    root[ProxyKeys.INSTANCE_DEFINITION] = instanceDefinitionProxies;
+
+    // 2 - Unpack the groups
+    root[ProxyKeys.GROUP] = _groupUnpacker.UnpackGroups(atomicObjects);
+    using (var _ = _activityFactory.Start("Converting objects"))
+    {
+      // 3 - Convert atomic objects and process through pipeline
+      List<LayerTableRecord> usedAcadLayers = new();
+      List<SendConversionResult> results = new();
+      int count = 0;
+      foreach (var (entity, applicationId) in atomicObjects)
+      {
+        cancellationToken.ThrowIfCancellationRequested();
+        (Collection objectCollection, LayerTableRecord? autocadLayer) = CreateObjectCollection(entity, tr);
+
+        if (autocadLayer is not null)
+        {
+          usedAcadLayers.Add(autocadLayer);
+          root.elements.Add(objectCollection);
+        }
+
+        var result = await ConvertAutocadEntity(
+          entity,
+          applicationId,
+          objectCollection,
+          instanceProxies,
+          projectId,
+          sendPipeline
+        );
+        results.Add(result);
+
+        onOperationProgressed.Report(
+          new($"Converting objects... ({count:N0} / {atomicObjects.Count:N0})", (double)++count / atomicObjects.Count)
+        );
+      }
+
+      if (results.All(x => x.Status == Status.ERROR))
+      {
+        throw new SpeckleException("Failed to convert all objects.");
+      }
+
+      // 4 - Unpack the render material proxies
+      root[ProxyKeys.RENDER_MATERIAL] = _materialUnpacker.UnpackMaterials(atomicObjects, usedAcadLayers);
+
+      // 5 - Unpack the color proxies
+      root[ProxyKeys.COLOR] = _colorUnpacker.UnpackColors(atomicObjects, usedAcadLayers);
+
+      // add any additional properties (most likely from verticals)
+      AddAdditionalProxiesToRoot(root);
+
+      // Process root collection and wait for all uploads
+      await sendPipeline.Process(root);
+      await sendPipeline.WaitForUpload();
+
+      return new RootObjectBuilderResult(root, results);
+    }
+  }
+
+  public virtual (Collection, LayerTableRecord?) CreateObjectCollection(Entity entity, Transaction tr)
+  {
+    return (new(), null);
+  }
+
+  public virtual void AddAdditionalProxiesToRoot(Collection rootCollection)
+  {
+    return;
+  }
+
+  private async Task<SendConversionResult> ConvertAutocadEntity(
+    Entity entity,
+    string applicationId,
+    Collection collectionHost,
+    IReadOnlyDictionary<string, InstanceProxy> instanceProxies,
+    string projectId,
+    SendPipeline sendPipeline
+  )
+  {
+    string sourceType = entity.GetType().ToString();
+    try
+    {
+      Base converted;
+      if (entity is BlockReference && instanceProxies.TryGetValue(applicationId, out InstanceProxy? instanceProxy))
+      {
+        converted = instanceProxy;
+      }
+      else if (_sendConversionCache.TryGetValue(projectId, applicationId, out ObjectReference? value))
+      {
+        converted = value;
+      }
+      else
+      {
+        converted = _converter.Convert(entity);
+        converted.applicationId = applicationId;
+      }
+
+      // NOTE: this is the main part that differentiate from the main root object builder
+      var reference = await sendPipeline.Process(converted).ConfigureAwait(false);
+      collectionHost.elements.Add(reference);
+      return new(Status.SUCCESS, applicationId, sourceType, reference);
+    }
+    catch (Exception ex) when (!ex.IsFatal())
+    {
+      _logger.LogSendConversionError(ex, sourceType);
+      return new(Status.ERROR, applicationId, sourceType, null, ex);
+    }
+  }
+}
@@ -0,0 +1,46 @@
+using Autodesk.AutoCAD.DatabaseServices;
+using Microsoft.Extensions.Logging;
+using Speckle.Connectors.Autocad.HostApp;
+using Speckle.Connectors.Common.Caching;
+using Speckle.Converters.Common;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Models.Collections;
+
+namespace Speckle.Connectors.Autocad.Operations.Send;
+
+public sealed class AutocadContinuousTraversalBuilder : AutocadContinuousTraversalBaseBuilder
+{
+  private readonly AutocadLayerUnpacker _layerUnpacker;
+
+  public AutocadContinuousTraversalBuilder(
+    AutocadLayerUnpacker layerUnpacker,
+    IRootToSpeckleConverter converter,
+    ISendConversionCache sendConversionCache,
+    AutocadInstanceUnpacker instanceObjectManager,
+    AutocadMaterialUnpacker materialUnpacker,
+    AutocadColorUnpacker colorUnpacker,
+    AutocadGroupUnpacker groupUnpacker,
+    ILogger<AutocadRootObjectBuilder> logger,
+    ISdkActivityFactory activityFactory
+  )
+    : base(
+      converter,
+      sendConversionCache,
+      instanceObjectManager,
+      materialUnpacker,
+      colorUnpacker,
+      groupUnpacker,
+      logger,
+      activityFactory
+    )
+  {
+    _layerUnpacker = layerUnpacker;
+  }
+
+  public override (Collection, LayerTableRecord?) CreateObjectCollection(Entity entity, Transaction tr)
+  {
+    Layer layer = _layerUnpacker.GetOrCreateSpeckleLayer(entity, tr, out LayerTableRecord? autocadLayer);
+
+    return (layer, autocadLayer);
+  }
+}
@@ -1,5 +1,6 @@
 using System.Diagnostics.CodeAnalysis;
 using Autodesk.AutoCAD.DatabaseServices;
+using Autodesk.AutoCAD.Geometry;
 using Microsoft.Extensions.Logging;
 using Speckle.Connectors.Autocad.HostApp;
 using Speckle.Connectors.Common.Builders;
@@ -7,18 +8,22 @@ using Speckle.Connectors.Common.Caching;
 using Speckle.Connectors.Common.Conversion;
 using Speckle.Connectors.Common.Extensions;
 using Speckle.Connectors.Common.Operations;
+using Speckle.Converters.Autocad;
+using Speckle.Converters.Autocad.Helpers;
 using Speckle.Converters.Common;
 using Speckle.Sdk;
 using Speckle.Sdk.Logging;
 using Speckle.Sdk.Models;
 using Speckle.Sdk.Models.Collections;
 using Speckle.Sdk.Models.Instances;
+using Speckle.Sdk.Pipelines.Progress;

 namespace Speckle.Connectors.Autocad.Operations.Send;

 public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadRootObject>
 {
  private readonly IRootToSpeckleConverter _converter;
+  private readonly IConverterSettingsStore<AutocadConversionSettings> _converterSettings;
  private readonly string[] _documentPathSeparator = ["\\"];
  private readonly ISendConversionCache _sendConversionCache;
  private readonly AutocadInstanceUnpacker _instanceUnpacker;
@@ -30,6 +35,7 @@ public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadR

  protected AutocadRootObjectBaseBuilder(
    IRootToSpeckleConverter converter,
+    IConverterSettingsStore<AutocadConversionSettings> converterSettings,
    ISendConversionCache sendConversionCache,
    AutocadInstanceUnpacker instanceObjectManager,
    AutocadMaterialUnpacker materialUnpacker,
@@ -40,6 +46,7 @@ public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadR
  )
  {
    _converter = converter;
+    _converterSettings = converterSettings;
    _sendConversionCache = sendConversionCache;
    _instanceUnpacker = instanceObjectManager;
    _materialUnpacker = materialUnpacker;
@@ -81,17 +88,35 @@ public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadR
    using Transaction tr = doc.Database.TransactionManager.StartTransaction();

    // 1 - Unpack the instances
-    var (atomicObjects, instanceProxies, instanceDefinitionProxies) = _instanceUnpacker.UnpackSelection(objects);
+    var (atomicObjects, atomicDefinitionObjectIds, instanceProxies, instanceDefinitionProxies) =
+      _instanceUnpacker.UnpackSelection(objects);
    root[ProxyKeys.INSTANCE_DEFINITION] = instanceDefinitionProxies;

    // 2 - Unpack the groups
    root[ProxyKeys.GROUP] = _groupUnpacker.UnpackGroups(atomicObjects);
+
+    // 3 - Add the Reference Point
+    Matrix3d? referenceTransform = null;
+    if (
+      Application.DocumentManager.CurrentDocument.Editor.CurrentUserCoordinateSystem is Matrix3d matrix
+      && matrix != Matrix3d.Identity
+    )
+    {
+      referenceTransform = matrix.Inverse();
+
+      /* POC: Do not attach transform to root for now! we are not consuming this in autocad/civil on receive and in revit it will undo all baked transforms :(
+      var transformMatrix = ReferencePointHelper.CreateTransformDataForRootObject(matrix);
+      root[ReferencePointHelper.REFERENCE_POINT_TRANSFORM_KEY] = transformMatrix;
+      */
+    }
+
    using (var _ = _activityFactory.Start("Converting objects"))
    {
-      // 3 - Convert atomic objects
      List<LayerTableRecord> usedAcadLayers = new(); // Keeps track of autocad layers used, so we can pass them on later to the material and color unpacker.
      List<SendConversionResult> results = new();
      int count = 0;
+
+      // 4 - Convert atomic objects
      foreach (var (entity, applicationId) in atomicObjects)
      {
        cancellationToken.ThrowIfCancellationRequested();
@@ -104,9 +129,28 @@ public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadR
          root.elements.Add(objectCollection);
        }

-        var result = ConvertAutocadEntity(entity, applicationId, objectCollection, instanceProxies, projectId);
-        results.Add(result);
+        SendConversionResult? result = null;
+        // If this is a atomic definition object, we *do not* want to bake in the reference point transform to the object
+        if (atomicDefinitionObjectIds.Contains(applicationId))
+        {
+          using (_converterSettings.Push(currentSettings => currentSettings with { ReferencePointTransform = null }))
+          {
+            result = ConvertAutocadEntity(entity, applicationId, objectCollection, instanceProxies, projectId);
+          }
+        }
+        else // this is a selected atomic object (not part of definition)
+        {
+          result = ConvertAutocadEntity(
+            entity,
+            applicationId,
+            objectCollection,
+            instanceProxies,
+            projectId,
+            referenceTransform // set this for top level instance proxies to use if needed
+          );
+        }

+        results.Add(result);
        onOperationProgressed.Report(new("Converting", (double)++count / atomicObjects.Count));
      }

@@ -115,10 +159,10 @@ public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadR
        throw new SpeckleException("Failed to convert all objects."); // fail fast instead creating empty commit! It will appear as model card error with red color.
      }

-      // 4 - Unpack the render material proxies
+      // 5 - Unpack the render material proxies
      root[ProxyKeys.RENDER_MATERIAL] = _materialUnpacker.UnpackMaterials(atomicObjects, usedAcadLayers);

-      // 5 - Unpack the color proxies
+      // 6 - Unpack the color proxies
      root[ProxyKeys.COLOR] = _colorUnpacker.UnpackColors(atomicObjects, usedAcadLayers);

      // add any additional properties (most likely from verticals)
@@ -143,15 +187,24 @@ public abstract class AutocadRootObjectBaseBuilder : IRootObjectBuilder<AutocadR
    string applicationId,
    Collection collectionHost,
    IReadOnlyDictionary<string, InstanceProxy> instanceProxies,
-    string projectId
+    string projectId,
+    Matrix3d? transform = null
  )
  {
    string sourceType = entity.GetType().ToString();
    try
    {
      Base converted;
-      if (entity is BlockReference && instanceProxies.TryGetValue(applicationId, out InstanceProxy? instanceProxy))
+      if (entity is BlockReference br && instanceProxies.TryGetValue(applicationId, out InstanceProxy? instanceProxy))
      {
+        // modify transform by reference point this if it is top level
+        if (instanceProxy.maxDepth == 0 && transform is Matrix3d validTransform)
+        {
+          instanceProxy.transform = TransformHelper.ConvertToInstanceMatrix4x4(
+            br.BlockTransform.PreMultiplyBy(validTransform)
+          );
+        }
+
        converted = instanceProxy;
      }
      else if (_sendConversionCache.TryGetValue(projectId, applicationId, out ObjectReference? value))
@@ -2,6 +2,7 @@ using Autodesk.AutoCAD.DatabaseServices;
 using Microsoft.Extensions.Logging;
 using Speckle.Connectors.Autocad.HostApp;
 using Speckle.Connectors.Common.Caching;
+using Speckle.Converters.Autocad;
 using Speckle.Converters.Common;
 using Speckle.Sdk.Logging;
 using Speckle.Sdk.Models.Collections;
@@ -15,6 +16,7 @@ public sealed class AutocadRootObjectBuilder : AutocadRootObjectBaseBuilder
  public AutocadRootObjectBuilder(
    AutocadLayerUnpacker layerUnpacker,
    IRootToSpeckleConverter converter,
+    IConverterSettingsStore<AutocadConversionSettings> converterSettings,
    ISendConversionCache sendConversionCache,
    AutocadInstanceUnpacker instanceObjectManager,
    AutocadMaterialUnpacker materialUnpacker,
@@ -25,6 +27,7 @@ public sealed class AutocadRootObjectBuilder : AutocadRootObjectBaseBuilder
  )
    : base(
      converter,
+      converterSettings,
      sendConversionCache,
      instanceObjectManager,
      materialUnpacker,
@@ -7,6 +7,8 @@ public static class AppUtils
  public static Speckle.Sdk.Application App =>
 #if CIVIL3D
    HostApplications.Civil3D;
+#elif PLANT3D
+    HostApplications.Plant3D;
 #elif AUTOCAD
    HostApplications.AutoCAD;
 #else
@@ -14,11 +16,11 @@ public static class AppUtils
 #endif

  public static HostAppVersion Version =>
-#if AUTOCAD2026 || CIVIL3D2026
+#if AUTOCAD2026 || CIVIL3D2026 || PLANT3D2026
    HostAppVersion.v2026;
-#elif AUTOCAD2025 || CIVIL3D2025
+#elif AUTOCAD2025 || CIVIL3D2025 || PLANT3D2025
    HostAppVersion.v2025;
-#elif AUTOCAD2024 || CIVIL3D2024
+#elif AUTOCAD2024 || CIVIL3D2024 || PLANT3D2024
    HostAppVersion.v2024;
 #elif AUTOCAD2023|| CIVIL3D2023
    HostAppVersion.v2023;
@@ -11,6 +11,9 @@ using Speckle.Converters.Autocad;
 #elif CIVIL3D
 using Speckle.Converters.Civil3dShared;
 using Speckle.Connectors.Civil3dShared.DependencyInjection;
+#elif PLANT3D
+using Speckle.Connectors.Plant3dShared.DependencyInjection;
+using Speckle.Converters.Plant3dShared;
 #endif
 namespace Speckle.Connectors.Autocad.Plugin;

@@ -39,13 +42,18 @@ public class AutocadCommand

    // init DI
    var services = new ServiceCollection();
+
    _disposableLogger = services.Initialize(AppUtils.App, AppUtils.Version);
+
 #if AUTOCAD
    services.AddAutocad();
    services.AddAutocadConverters();
 #elif CIVIL3D
    services.AddCivil3d();
    services.AddCivil3dConverters();
+#elif PLANT3D
+    services.AddPlant3d();
+    services.AddPlant3dConverters();
 #endif
    Container = services.BuildServiceProvider();
    Container.UseDUI();
@@ -3,7 +3,7 @@ using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using Autodesk.Windows;
 using Speckle.Sdk;
-#if !AUTOCAD2025_OR_GREATER && !CIVIL3D2025_OR_GREATER
+#if !AUTOCAD2025_OR_GREATER && !CIVIL3D2025_OR_GREATER && !PLANT3D2025_OR_GREATER
 using System.IO;
 #endif

@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ApplicationPackage 
+        SchemaVersion="1.0"
+        AppVersion="1.0"
+        Author="AEC SYSTEMS LTD"
+        Name="Speckle for AutoCAD"
+        Description="Speckle for AutoCAD"
+        Icon="./Contents/Resources/Logo.ico"
+        ProductCode="{958850b9-3782-4e6f-b9b3-1b570e0fcae1}" 
+        UpgradeCode="{274de351-80aa-4972-9b45-6a93f8ce968f}"> <!-- For now, we're not updating the AppVersion & ProductCodes with each version -->
+    
+    <CompanyDetails
+            Name="Speckle"
+            Url="https://speckle.systems"
+            Email="support@speckle.systems" />
+    <Components>
+    
+        <!-- AutoCAD 2022 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Autocad2022"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Autocad2022/Speckle.Connectors.Autocad2022.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="AutoCAD"
+                    SeriesMin="R24.1"
+                    SeriesMax="R24.1" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2023 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Autocad2023"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Autocad2023/Speckle.Connectors.Autocad2023.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="AutoCAD"
+                    SeriesMin="R24.2"
+                    SeriesMax="R24.2" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2024 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Autocad2024"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Autocad2024/Speckle.Connectors.Autocad2024.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="AutoCAD"
+                    SeriesMin="R24.3"
+                    SeriesMax="R24.3" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2025 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Autocad2025"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Autocad2025/Speckle.Connectors.Autocad2025.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="AutoCAD"
+                    SeriesMin="R25.0"
+                    SeriesMax="R25.0" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2026 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Autocad2026"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Autocad2026/Speckle.Connectors.Autocad2026.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="AutoCAD"
+                    SeriesMin="R25.1"
+                    SeriesMax="R25.1" />
+        </ComponentEntry>
+    </Components>
+
+</ApplicationPackage>
@@ -0,0 +1,79 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ApplicationPackage
+        SchemaVersion="1.0"
+        AppVersion="1.0"
+        Author="AEC SYSTEMS LTD"
+        Name="Speckle for Civil 3D"
+        Description="Speckle for Civil 3D"
+        Icon="./Contents/Resources/Logo.ico"
+        ProductCode="{cecad7b2-daa9-4a9d-941d-737619ffd999}"
+        UpgradeCode="{ccf4134d-0e24-4e91-8bf4-781ec7313bef}"> <!-- For now, we're not updating the AppVersion & ProductCodes with each version -->
+
+    <CompanyDetails
+            Name="Speckle"
+            Url="https://speckle.systems"
+            Email="support@speckle.systems" />
+    <Components>
+
+        <!-- AutoCAD 2022 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Civil3d2022"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Civil3d2022/Speckle.Connectors.Civil3d2022.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="Civil3D"
+                    SeriesMin="R24.1"
+                    SeriesMax="R24.1" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2023 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Civil3d2023"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Civil3d2023/Speckle.Connectors.Civil3d2023.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="Civil3D"
+                    SeriesMin="R24.2"
+                    SeriesMax="R24.2" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2024 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Civil3d2024"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Civil3d2024/Speckle.Connectors.Civil3d2024.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="Civil3D"
+                    SeriesMin="R24.3"
+                    SeriesMax="R24.3" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2025 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Civil3d2025"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Civil3d2025/Speckle.Connectors.Civil3d2025.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="Civil3D"
+                    SeriesMin="R25.0"
+                    SeriesMax="R25.0" />
+        </ComponentEntry>
+
+        <!-- AutoCAD 2026 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Civil3d2026"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Civil3d2026/Speckle.Connectors.Civil3d2026.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="Civil3D"
+                    SeriesMin="R25.1"
+                    SeriesMax="R25.1" />
+        </ComponentEntry>
+    </Components>
+
+</ApplicationPackage>
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<ApplicationPackage
+        SchemaVersion="1.0"
+        AppVersion="1.0"
+        Author="AEC SYSTEMS LTD"
+        Name="Speckle for Plant 3D"
+        Description="Speckle for Plant 3D"
+        Icon="./Contents/Resources/Logo.ico"
+        ProductCode="{b91352b6-01db-4084-93c8-684bb231947e}"
+        UpgradeCode="{91c7e43f-e962-40e9-85bd-d6bd733b6964}">
+
+    <CompanyDetails
+            Name="Speckle"
+            Url="https://speckle.systems"
+            Email="support@speckle.systems" />
+    <Components>
+
+        <!-- Plant 3D 2026 -->
+        <ComponentEntry
+                AppName="Speckle.Connectors.Plant3d2026"
+                ModuleName="./Contents/Windows/Speckle.Connectors.Plant3d2026/Speckle.Connectors.Plant3d2026.dll"
+                LoadOnAutoCADStartup="True">
+            <RuntimeRequirements
+                    OS="Win64"
+                    Platform="Plant3D"
+                    SeriesMin="R25.1"
+                    SeriesMax="R25.1" />
+        </ComponentEntry>
+    </Components>
+
+</ApplicationPackage>
@@ -41,6 +41,8 @@
    <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\AutocadContinuousTraversalBaseBuilder.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\AutocadContinuousTraversalBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\AutocadRootObjectBaseBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\AutocadRootObjectBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Plugin\AutocadRibbon.cs" />
@@ -53,4 +55,15 @@
    <EmbeddedResource Include="$(MSBuildThisFileDirectory)Resources\s2logo16.png" />
    <EmbeddedResource Include="$(MSBuildThisFileDirectory)Resources\s2logo32.png" />
  </ItemGroup>
+  <ItemGroup>
+    <Content Include="$(MSBuildThisFileDirectory)Plugin\BundleCivil3D\PackageContents.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="$(MSBuildThisFileDirectory)Plugin\BundleAutoCAD\PackageContents.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+    <Content Include="$(MSBuildThisFileDirectory)Plugin\BundlePlant3D\PackageContents.xml">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
 </Project>
@@ -82,8 +82,8 @@
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+          "Microsoft.CSharp": "4.7.0",
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+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
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@@ -303,7 +324,7 @@
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        "dependencies": {
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-          "Speckle.Objects": "[3.9.0, )"
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@@ -347,35 +368,12 @@
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@@ -82,8 +82,8 @@
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@@ -178,6 +178,29 @@
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      },
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+        "dependencies": {
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+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
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+          "Microsoft.Extensions.Logging": "2.2.0",
+          "Speckle.DoubleNumerics": "4.1.0",
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+        }
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+        "dependencies": {
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+      },
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@@ -269,9 +292,7 @@
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        "dependencies": {
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-          "Speckle.Objects": "[3.9.0, )"
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@@ -347,35 +368,12 @@
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@@ -82,8 +82,8 @@
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@@ -269,9 +292,7 @@
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@@ -303,7 +324,7 @@
        "type": "Project",
        "dependencies": {
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-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
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@@ -347,35 +368,12 @@
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@@ -164,6 +164,25 @@
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+          "Microsoft.Extensions.Logging": "2.2.0",
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+      },
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@@ -220,9 +239,7 @@
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@@ -255,7 +272,7 @@
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-          "Speckle.Objects": "[3.9.0, )"
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@@ -299,33 +316,12 @@
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        "dependencies": {
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@@ -164,6 +164,25 @@
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+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
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+          "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": "3.15.3"
+        }
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+      },
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@@ -220,9 +239,7 @@
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -255,7 +272,7 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "Microsoft.Extensions.DependencyInjection": {
@@ -299,33 +316,12 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -22,6 +22,10 @@ public static class Civil3dConnectorModule
    // add send
    serviceCollection.LoadSend();
    serviceCollection.AddScoped<IRootObjectBuilder<AutocadRootObject>, Civil3dRootObjectBuilder>();
+    serviceCollection.AddScoped<
+      IRootContinuousTraversalBuilder<AutocadRootObject>,
+      Civil3dContinuousTraversalBuilder
+    >();
    serviceCollection.AddSingleton<IBinding, Civil3dSendBinding>();

    // add receive
@@ -0,0 +1,57 @@
+using Autodesk.AutoCAD.DatabaseServices;
+using Microsoft.Extensions.Logging;
+using Speckle.Connectors.Autocad.HostApp;
+using Speckle.Connectors.Autocad.Operations.Send;
+using Speckle.Connectors.Common.Caching;
+using Speckle.Connectors.Common.Operations;
+using Speckle.Converters.Civil3dShared.ToSpeckle;
+using Speckle.Converters.Common;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Models.Collections;
+
+namespace Speckle.Connectors.Civil3dShared.Operations.Send;
+
+public sealed class Civil3dContinuousTraversalBuilder : AutocadContinuousTraversalBaseBuilder
+{
+  private readonly AutocadLayerUnpacker _layerUnpacker;
+  private readonly PropertySetDefinitionHandler _propertySetDefinitionHandler;
+
+  public Civil3dContinuousTraversalBuilder(
+    AutocadLayerUnpacker layerUnpacker,
+    PropertySetDefinitionHandler propertySetDefinitionHandler,
+    IRootToSpeckleConverter converter,
+    ISendConversionCache sendConversionCache,
+    AutocadInstanceUnpacker instanceObjectManager,
+    AutocadMaterialUnpacker materialUnpacker,
+    AutocadColorUnpacker colorUnpacker,
+    AutocadGroupUnpacker groupUnpacker,
+    ILogger<AutocadRootObjectBuilder> logger,
+    ISdkActivityFactory activityFactory
+  )
+    : base(
+      converter,
+      sendConversionCache,
+      instanceObjectManager,
+      materialUnpacker,
+      colorUnpacker,
+      groupUnpacker,
+      logger,
+      activityFactory
+    )
+  {
+    _layerUnpacker = layerUnpacker;
+    _propertySetDefinitionHandler = propertySetDefinitionHandler;
+  }
+
+  public override (Collection, LayerTableRecord?) CreateObjectCollection(Entity entity, Transaction tr)
+  {
+    Layer layer = _layerUnpacker.GetOrCreateSpeckleLayer(entity, tr, out LayerTableRecord? autocadLayer);
+
+    return (layer, autocadLayer);
+  }
+
+  public override void AddAdditionalProxiesToRoot(Collection rootObject)
+  {
+    rootObject[ProxyKeys.PROPERTYSET_DEFINITIONS] = _propertySetDefinitionHandler.Definitions;
+  }
+}
@@ -4,6 +4,7 @@ using Speckle.Connectors.Autocad.HostApp;
 using Speckle.Connectors.Autocad.Operations.Send;
 using Speckle.Connectors.Common.Caching;
 using Speckle.Connectors.Common.Operations;
+using Speckle.Converters.Autocad;
 using Speckle.Converters.Civil3dShared.ToSpeckle;
 using Speckle.Converters.Common;
 using Speckle.Sdk.Logging;
@@ -20,6 +21,7 @@ public sealed class Civil3dRootObjectBuilder : AutocadRootObjectBaseBuilder
    AutocadLayerUnpacker layerUnpacker,
    PropertySetDefinitionHandler propertySetDefinitionHandler,
    IRootToSpeckleConverter converter,
+    IConverterSettingsStore<AutocadConversionSettings> converterSettings,
    ISendConversionCache sendConversionCache,
    AutocadInstanceUnpacker instanceObjectManager,
    AutocadMaterialUnpacker materialUnpacker,
@@ -30,6 +32,7 @@ public sealed class Civil3dRootObjectBuilder : AutocadRootObjectBaseBuilder
  )
    : base(
      converter,
+      converterSettings,
      sendConversionCache,
      instanceObjectManager,
      materialUnpacker,
@@ -13,6 +13,7 @@
    <Compile Include="$(MSBuildThisFileDirectory)DependencyInjection\Civil3dConnectorModule.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\PropertySetBaker.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Receive\Civil3dHostObjectBuilder.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Civil3dContinuousTraversalBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Civil3dRootObjectBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Bindings\Civil3dSendBinding.cs" />
  </ItemGroup>
@@ -0,0 +1,30 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Plant3DVersion>2026</Plant3DVersion>
+    <DefineConstants>$(DefineConstants);PLANT3D2026;PLANT3D;PLANT3D2024_OR_GREATER;PLANT3D2025_OR_GREATER;PLANT3D2026_OR_GREATER</DefineConstants>
+    <Configurations>Debug;Release;Local</Configurations>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <!-- .NET Core uses this to move native dependencies into a root for runtime selection and usage for non-windows development https://learn.microsoft.com/en-us/dotnet/core/project-sdk/msbuild-props#enablewindowstargeting -->
+    <RuntimeIdentifier>win-x64</RuntimeIdentifier> <!--This is needed for managed dependencies-->
+    <CopyLocalLockFileAssemblies>true</CopyLocalLockFileAssemblies> <!--This is needed for the rest-->
+    <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath> <!--This is needed just to keep folder paths the same as the netframework versions-->
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Speckle.AutoCAD.API" VersionOverride="2026.0.0" ExcludeAssets="runtime"/>
+    <PackageReference Include="Speckle.Plant3D.API" VersionOverride="2026.0.0" ExcludeAssets="runtime"/>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\Converters\Plant3d\Speckle.Converters.Plant3d2026\Speckle.Converters.Plant3d2026.csproj" />
+    <ProjectReference Include="..\..\..\DUI3\Speckle.Connectors.DUI.WebView\Speckle.Connectors.DUI.WebView.csproj" />
+    <ProjectReference Include="..\..\..\Sdk\Speckle.Converters.Common\Speckle.Converters.Common.csproj" />
+  </ItemGroup>
+
+  <Import Project="..\Speckle.Connectors.Plant3dShared\Speckle.Connectors.Plant3dShared.projitems" Label="Shared" />
+
+  <Import Project="..\Speckle.Connectors.AutocadShared\Speckle.Connectors.AutocadShared.projitems" Label="Shared" />
+</Project>
@@ -0,0 +1,341 @@
+{
+  "version": 2,
+  "dependencies": {
+    "net8.0-windows7.0": {
+      "Microsoft.NETFramework.ReferenceAssemblies": {
+        "type": "Direct",
+        "requested": "[1.0.3, )",
+        "resolved": "1.0.3",
+        "contentHash": "vUc9Npcs14QsyOD01tnv/m8sQUnGTGOw1BCmKcv77LBJY7OxhJ+zJF7UD/sCL3lYNFuqmQEVlkfS4Quif6FyYg==",
+        "dependencies": {
+          "Microsoft.NETFramework.ReferenceAssemblies.net461": "1.0.3"
+        }
+      },
+      "Microsoft.SourceLink.GitHub": {
+        "type": "Direct",
+        "requested": "[8.0.0, )",
+        "resolved": "8.0.0",
+        "contentHash": "G5q7OqtwIyGTkeIOAc3u2ZuV/kicQaec5EaRnc0pIeSnh9LUjj+PYQrJYBURvDt7twGl2PKA7nSN0kz1Zw5bnQ==",
+        "dependencies": {
+          "Microsoft.Build.Tasks.Git": "8.0.0",
+          "Microsoft.SourceLink.Common": "8.0.0"
+        }
+      },
+      "PolySharp": {
+        "type": "Direct",
+        "requested": "[1.14.1, )",
+        "resolved": "1.14.1",
+        "contentHash": "mOOmFYwad3MIOL14VCjj02LljyF1GNw1wP0YVlxtcPvqdxjGGMNdNJJxHptlry3MOd8b40Flm8RPOM8JOlN2sQ=="
+      },
+      "Speckle.AutoCAD.API": {
+        "type": "Direct",
+        "requested": "[2026.0.0, )",
+        "resolved": "2026.0.0",
+        "contentHash": "WlkV81PmbK/ftoM7aGpU6LGosKbePBQej9MO/m63rFMozX89tsitEhE12o58wu7K/4FmRUdAMolYtdK20EDBnw=="
+      },
+      "Speckle.InterfaceGenerator": {
+        "type": "Direct",
+        "requested": "[0.9.6, )",
+        "resolved": "0.9.6",
+        "contentHash": "HKH7tYrYYlCK1ct483hgxERAdVdMtl7gUKW9ijWXxA1UsYR4Z+TrRHYmzZ9qmpu1NnTycSrp005NYM78GDKV1w=="
+      },
+      "Speckle.Plant3D.API": {
+        "type": "Direct",
+        "requested": "[2026.0.0, )",
+        "resolved": "2026.0.0",
+        "contentHash": "VT8M6CGQl1mk3/5Ro3AEAOVrOs/cX58YRwYZnu+6xeHvsazK07Et/6kMJsde4Y7Xrpox7eBLKgYeOspiRVvX5g==",
+        "dependencies": {
+          "Speckle.AutoCAD.API": "2026.0.0"
+        }
+      },
+      "GraphQL.Client": {
+        "type": "Transitive",
+        "resolved": "6.0.0",
+        "contentHash": "8yPNBbuVBpTptivyAlak4GZvbwbUcjeQTL4vN1HKHRuOykZ4r7l5fcLS6vpyPyLn0x8FsL31xbOIKyxbmR9rbA==",
+        "dependencies": {
+          "GraphQL.Client.Abstractions": "6.0.0",
+          "GraphQL.Client.Abstractions.Websocket": "6.0.0",
+          "System.Reactive": "5.0.0"
+        }
+      },
+      "GraphQL.Client.Abstractions": {
+        "type": "Transitive",
+        "resolved": "6.0.0",
+        "contentHash": "h7uzWFORHZ+CCjwr/ThAyXMr0DPpzEANDa4Uo54wqCQ+j7qUKwqYTgOrb1W40sqbvNaZm9v/X7It31SUw0maHA==",
+        "dependencies": {
+          "GraphQL.Primitives": "6.0.0"
+        }
+      },
+      "GraphQL.Client.Abstractions.Websocket": {
+        "type": "Transitive",
+        "resolved": "6.0.0",
+        "contentHash": "Nr9bPf8gIOvLuXpqEpqr9z9jslYFJOvd0feHth3/kPqeR3uMbjF5pjiwh4jxyMcxHdr8Pb6QiXkV3hsSyt0v7A==",
+        "dependencies": {
+          "GraphQL.Client.Abstractions": "6.0.0"
+        }
+      },
+      "GraphQL.Primitives": {
+        "type": "Transitive",
+        "resolved": "6.0.0",
+        "contentHash": "yg72rrYDapfsIUrul7aF6wwNnTJBOFvuA9VdDTQpPa8AlAriHbufeXYLBcodKjfUdkCnaiggX1U/nEP08Zb5GA=="
+      },
+      "Microsoft.Build.Tasks.Git": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "bZKfSIKJRXLTuSzLudMFte/8CempWjVamNUR5eHJizsy+iuOuO/k2gnh7W0dHJmYY0tBf+gUErfluCv5mySAOQ=="
+      },
+      "Microsoft.Data.Sqlite": {
+        "type": "Transitive",
+        "resolved": "7.0.5",
+        "contentHash": "KGxbPeWsQMnmQy43DSBxAFtHz3l2JX8EWBSGUCvT3CuZ8KsuzbkqMIJMDOxWtG8eZSoCDI04aiVQjWuuV8HmSw==",
+        "dependencies": {
+          "Microsoft.Data.Sqlite.Core": "7.0.5",
+          "SQLitePCLRaw.bundle_e_sqlite3": "2.1.4"
+        }
+      },
+      "Microsoft.Data.Sqlite.Core": {
+        "type": "Transitive",
+        "resolved": "7.0.5",
+        "contentHash": "FTerRmQPqHrCrnoUzhBu+E+1DNGwyrAMLqHkAqOOOu5pGfyMOj8qQUBxI/gDtWtG11p49UxSfWmBzRNlwZqfUg==",
+        "dependencies": {
+          "SQLitePCLRaw.core": "2.1.4"
+        }
+      },
+      "Microsoft.Extensions.Configuration": {
+        "type": "Transitive",
+        "resolved": "2.2.0",
+        "contentHash": "nOP8R1mVb/6mZtm2qgAJXn/LFm/2kMjHDAg/QJLFG6CuWYJtaD3p1BwQhufBVvRzL9ceJ/xF0SQ0qsI2GkDQAA==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Abstractions": "2.2.0"
+        }
+      },
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+        "type": "Transitive",
+        "resolved": "2.2.0",
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+        "dependencies": {
+          "Microsoft.Extensions.Primitives": "2.2.0"
+        }
+      },
+      "Microsoft.Extensions.Configuration.Binder": {
+        "type": "Transitive",
+        "resolved": "2.2.0",
+        "contentHash": "vJ9xvOZCnUAIHcGC3SU35r3HKmHTVIeHzo6u/qzlHAqD8m6xv92MLin4oJntTvkpKxVX3vI1GFFkIQtU3AdlsQ==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration": "2.2.0"
+        }
+      },
+      "Microsoft.Extensions.DependencyInjection.Abstractions": {
+        "type": "Transitive",
+        "resolved": "2.2.0",
+        "contentHash": "f9hstgjVmr6rmrfGSpfsVOl2irKAgr1QjrSi3FgnS7kulxband50f2brRLwySAQTADPZeTdow0mpSMcoAdadCw=="
+      },
+      "Microsoft.Extensions.Options": {
+        "type": "Transitive",
+        "resolved": "2.2.0",
+        "contentHash": "UpZLNLBpIZ0GTebShui7xXYh6DmBHjWM8NxGxZbdQh/bPZ5e6YswqI+bru6BnEL5eWiOdodsXtEz3FROcgi/qg==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Primitives": "2.2.0",
+          "System.ComponentModel.Annotations": "4.5.0"
+        }
+      },
+      "Microsoft.Extensions.Primitives": {
+        "type": "Transitive",
+        "resolved": "2.2.0",
+        "contentHash": "azyQtqbm4fSaDzZHD/J+V6oWMFaf2tWP4WEGIYePLCMw3+b2RQdj9ybgbQyjCshcitQKQ4lEDOZjmSlTTrHxUg==",
+        "dependencies": {
+          "System.Memory": "4.5.1",
+          "System.Runtime.CompilerServices.Unsafe": "4.5.1"
+        }
+      },
+      "Microsoft.NETFramework.ReferenceAssemblies.net461": {
+        "type": "Transitive",
+        "resolved": "1.0.3",
+        "contentHash": "AmOJZwCqnOCNp6PPcf9joyogScWLtwy0M1WkqfEQ0M9nYwyDD7EX9ZjscKS5iYnyvteX7kzSKFCKt9I9dXA6mA=="
+      },
+      "Microsoft.SourceLink.Common": {
+        "type": "Transitive",
+        "resolved": "8.0.0",
+        "contentHash": "dk9JPxTCIevS75HyEQ0E4OVAFhB2N+V9ShCXf8Q6FkUQZDkgLI12y679Nym1YqsiSysuQskT7Z+6nUf3yab6Vw=="
+      },
+      "Speckle.Newtonsoft.Json": {
+        "type": "Transitive",
+        "resolved": "13.0.2",
+        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
+      },
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+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w=="
+      },
+      "SQLitePCLRaw.bundle_e_sqlite3": {
+        "type": "Transitive",
+        "resolved": "2.1.4",
+        "contentHash": "EWI1olKDjFEBMJu0+3wuxwziIAdWDVMYLhuZ3Qs84rrz+DHwD00RzWPZCa+bLnHCf3oJwuFZIRsHT5p236QXww==",
+        "dependencies": {
+          "SQLitePCLRaw.lib.e_sqlite3": "2.1.4",
+          "SQLitePCLRaw.provider.e_sqlite3": "2.1.4"
+        }
+      },
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+        "dependencies": {
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+        }
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+      },
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+      },
+      "System.Runtime.CompilerServices.Unsafe": {
+        "type": "Transitive",
+        "resolved": "4.5.1",
+        "contentHash": "Zh8t8oqolRaFa9vmOZfdQm/qKejdqz0J9kr7o2Fu0vPeoH3BL1EOXipKWwkWtLT1JPzjByrF19fGuFlNbmPpiw=="
+      },
+      "speckle.connectors.common": {
+        "type": "Project",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
+          "Speckle.Connectors.Logging": "[1.0.0, )",
+          "Speckle.Converters.Common": "[1.0.0, )",
+          "Speckle.Objects": "[3.15.3, )"
+        }
+      },
+      "speckle.connectors.dui": {
+        "type": "Project",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
+          "Speckle.Connectors.Common": "[1.0.0, )"
+        }
+      },
+      "speckle.connectors.dui.webview": {
+        "type": "Project",
+        "dependencies": {
+          "Microsoft.Web.WebView2": "[1.0.1938.49, )",
+          "Speckle.Connectors.DUI": "[1.0.0, )"
+        }
+      },
+      "speckle.connectors.logging": {
+        "type": "Project"
+      },
+      "speckle.converters.common": {
+        "type": "Project",
+        "dependencies": {
+          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
+          "Speckle.Objects": "[3.15.3, )"
+        }
+      },
+      "speckle.converters.plant3d2026": {
+        "type": "Project",
+        "dependencies": {
+          "Speckle.AutoCAD.API": "[2026.0.0, )",
+          "Speckle.Connectors.DUI.WebView": "[1.0.0, )",
+          "Speckle.Converters.Common": "[1.0.0, )",
+          "Speckle.Plant3D.API": "[2026.0.0, )"
+        }
+      },
+      "Microsoft.Extensions.DependencyInjection": {
+        "type": "CentralTransitive",
+        "requested": "[2.2.0, )",
+        "resolved": "2.2.0",
+        "contentHash": "MZtBIwfDFork5vfjpJdG5g8wuJFt7d/y3LOSVVtDK/76wlbtz6cjltfKHqLx2TKVqTj5/c41t77m1+h20zqtPA==",
+        "dependencies": {
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0"
+        }
+      },
+      "Microsoft.Extensions.Logging": {
+        "type": "CentralTransitive",
+        "requested": "[2.2.0, )",
+        "resolved": "2.2.0",
+        "contentHash": "Nxqhadc9FCmFHzU+fz3oc8sFlE6IadViYg8dfUdGzJZ2JUxnCsRghBhhOWdM4B2zSZqEc+0BjliBh/oNdRZuig==",
+        "dependencies": {
+          "Microsoft.Extensions.Configuration.Binder": "2.2.0",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Options": "2.2.0"
+        }
+      },
+      "Microsoft.Extensions.Logging.Abstractions": {
+        "type": "CentralTransitive",
+        "requested": "[2.2.0, )",
+        "resolved": "2.2.0",
+        "contentHash": "B2WqEox8o+4KUOpL7rZPyh6qYjik8tHi2tN8Z9jZkHzED8ElYgZa/h6K+xliB435SqUcWT290Fr2aa8BtZjn8A=="
+      },
+      "Microsoft.Web.WebView2": {
+        "type": "CentralTransitive",
+        "requested": "[1.0.1938.49, )",
+        "resolved": "1.0.1938.49",
+        "contentHash": "z8KnFnaTYzhA/ZnyRX0qGfS1NU5ZBJeClAH64F0fVDvdDJTvME7xl6zTJ0Jlfe1BtL3C0NH9xTy64shg2baKdw=="
+      },
+      "Speckle.DoubleNumerics": {
+        "type": "CentralTransitive",
+        "requested": "[4.1.0, )",
+        "resolved": "4.1.0",
+        "contentHash": "20DtS+FsDRsOD9+AU3TwNFZ0qrKo5f6f7B5ZR9wStsIHHHC9k7DpjbCvuNtmnSjx54MD+TJC7wV2f5iyGVPj1A=="
+      },
+      "Speckle.Objects": {
+        "type": "CentralTransitive",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
+        "dependencies": {
+          "Speckle.Sdk": "3.15.3"
+        }
+      }
+    },
+    "net8.0-windows7.0/win-x64": {
+      "SQLitePCLRaw.lib.e_sqlite3": {
+        "type": "Transitive",
+        "resolved": "2.1.4",
+        "contentHash": "2C9Q9eX7CPLveJA0rIhf9RXAvu+7nWZu1A2MdG6SD/NOu26TakGgL1nsbc0JAspGijFOo3HoN79xrx8a368fBg=="
+      },
+      "Microsoft.Web.WebView2": {
+        "type": "CentralTransitive",
+        "requested": "[1.0.1938.49, )",
+        "resolved": "1.0.1938.49",
+        "contentHash": "z8KnFnaTYzhA/ZnyRX0qGfS1NU5ZBJeClAH64F0fVDvdDJTvME7xl6zTJ0Jlfe1BtL3C0NH9xTy64shg2baKdw=="
+      }
+    }
+  }
+}
@@ -0,0 +1,61 @@
+using Microsoft.Extensions.DependencyInjection;
+using Speckle.Connectors.Autocad.Bindings;
+using Speckle.Connectors.Common.Caching;
+using Speckle.Connectors.Common.Cancellation;
+using Speckle.Connectors.Common.Threading;
+using Speckle.Connectors.DUI.Bindings;
+using Speckle.Connectors.DUI.Bridge;
+using Speckle.Connectors.DUI.Models;
+using Speckle.Connectors.DUI.Models.Card.SendFilter;
+using Speckle.Converters.Autocad;
+using Speckle.Converters.Common;
+using Speckle.Converters.Plant3dShared;
+
+namespace Speckle.Connectors.Plant3dShared.Bindings;
+
+public sealed class Plant3dSendBinding : AutocadSendBaseBinding
+{
+  private readonly IPlant3dConversionSettingsFactory _plant3dConversionSettingsFactory;
+  private readonly IAutocadConversionSettingsFactory _autocadConversionSettingsFactory;
+
+  public Plant3dSendBinding(
+    DocumentModelStore store,
+    IBrowserBridge parent,
+    IEnumerable<ISendFilter> sendFilters,
+    ICancellationManager cancellationManager,
+    ISendConversionCache sendConversionCache,
+    IPlant3dConversionSettingsFactory plant3dConversionSettingsFactory,
+    IAutocadConversionSettingsFactory autocadConversionSettingsFactory,
+    IThreadContext threadContext,
+    ITopLevelExceptionHandler topLevelExceptionHandler,
+    IAppIdleManager appIdleManager,
+    ISendOperationManagerFactory sendOperationManagerFactory
+  )
+    : base(
+      store,
+      parent,
+      sendFilters,
+      cancellationManager,
+      sendConversionCache,
+      threadContext,
+      topLevelExceptionHandler,
+      appIdleManager,
+      sendOperationManagerFactory
+    )
+  {
+    _plant3dConversionSettingsFactory = plant3dConversionSettingsFactory;
+    _autocadConversionSettingsFactory = autocadConversionSettingsFactory;
+  }
+
+  // We need a separate send binding for Plant 3D due to using a different unit converter (needed for conversion settings construction)
+  protected override void InitializeSettings(IServiceProvider serviceProvider)
+  {
+    serviceProvider
+      .GetRequiredService<IConverterSettingsStore<Plant3dConversionSettings>>()
+      .Initialize(_plant3dConversionSettingsFactory.Create(Application.DocumentManager.CurrentDocument));
+
+    serviceProvider
+      .GetRequiredService<IConverterSettingsStore<AutocadConversionSettings>>()
+      .Initialize(_autocadConversionSettingsFactory.Create(Application.DocumentManager.CurrentDocument));
+  }
+}
@@ -0,0 +1,27 @@
+using System.Reflection;
+using Microsoft.Extensions.DependencyInjection;
+using Speckle.Connectors.Autocad.DependencyInjection;
+using Speckle.Connectors.Autocad.Operations.Send;
+using Speckle.Connectors.Common.Builders;
+using Speckle.Connectors.DUI.Bindings;
+using Speckle.Connectors.Plant3dShared.Bindings;
+using Speckle.Connectors.Plant3dShared.Operations.Send;
+using Speckle.Sdk;
+
+namespace Speckle.Connectors.Plant3dShared.DependencyInjection;
+
+public static class Plant3dConnectorModule
+{
+  public static void AddPlant3d(this IServiceCollection serviceCollection)
+  {
+    serviceCollection.AddAutocadBase();
+
+    // add send
+    serviceCollection.LoadSend();
+    serviceCollection.AddScoped<IRootObjectBuilder<AutocadRootObject>, Plant3dRootObjectBuilder>();
+    serviceCollection.AddSingleton<IBinding, Plant3dSendBinding>();
+
+    // automatically detects the Class:IClass interface pattern to register all generated interfaces
+    serviceCollection.AddMatchingInterfacesAsTransient(Assembly.GetExecutingAssembly());
+  }
+}
@@ -0,0 +1,50 @@
+using Autodesk.AutoCAD.DatabaseServices;
+using Microsoft.Extensions.Logging;
+using Speckle.Connectors.Autocad.HostApp;
+using Speckle.Connectors.Autocad.Operations.Send;
+using Speckle.Connectors.Common.Caching;
+using Speckle.Converters.Autocad;
+using Speckle.Converters.Common;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Models.Collections;
+
+namespace Speckle.Connectors.Plant3dShared.Operations.Send;
+
+public sealed class Plant3dRootObjectBuilder : AutocadRootObjectBaseBuilder
+{
+  private readonly AutocadLayerUnpacker _layerUnpacker;
+
+  public Plant3dRootObjectBuilder(
+    AutocadLayerUnpacker layerUnpacker,
+    IRootToSpeckleConverter converter,
+    IConverterSettingsStore<AutocadConversionSettings> converterSettings,
+    ISendConversionCache sendConversionCache,
+    AutocadInstanceUnpacker instanceObjectManager,
+    AutocadMaterialUnpacker materialUnpacker,
+    AutocadColorUnpacker colorUnpacker,
+    AutocadGroupUnpacker groupUnpacker,
+    ILogger<AutocadRootObjectBuilder> logger,
+    ISdkActivityFactory activityFactory
+  )
+    : base(
+      converter,
+      converterSettings,
+      sendConversionCache,
+      instanceObjectManager,
+      materialUnpacker,
+      colorUnpacker,
+      groupUnpacker,
+      logger,
+      activityFactory
+    )
+  {
+    _layerUnpacker = layerUnpacker;
+  }
+
+  public override (Collection, LayerTableRecord?) CreateObjectCollection(Entity entity, Transaction tr)
+  {
+    Layer layer = _layerUnpacker.GetOrCreateSpeckleLayer(entity, tr, out LayerTableRecord? autocadLayer);
+
+    return (layer, autocadLayer);
+  }
+}
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
+    <HasSharedItems>true</HasSharedItems>
+    <SharedGUID>B1C4A14C-2F4E-4C3D-9B71-A3F5D8E6C912</SharedGUID>
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration">
+    <Import_RootNamespace>Speckle.Connectors.Plant3dShared</Import_RootNamespace>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildThisFileDirectory)DependencyInjection\Plant3dConnectorModule.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Plant3dRootObjectBuilder.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Bindings\Plant3dSendBinding.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="$(MSBuildThisFileDirectory)DependencyInjection\" />
+    <Folder Include="$(MSBuildThisFileDirectory)Operations\Send\" />
+  </ItemGroup>
+</Project>
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{B1C4A14C-2F4E-4C3D-9B71-A3F5D8E6C912}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.Common.Default.props" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.Common.props" />
+  <Import Project="Speckle.Connectors.Plant3dShared.projitems" Label="Shared" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.CSharp.targets" />
+</Project>
@@ -1,4 +1,5 @@
-using Microsoft.Extensions.DependencyInjection;
+using System.IO;
+using Microsoft.Extensions.DependencyInjection;
 using Speckle.Connectors.Common.Cancellation;
 using Speckle.Connectors.CSiShared.HostApp;
 using Speckle.Connectors.CSiShared.Operations.Send.Settings;
@@ -55,6 +56,7 @@ public sealed class CsiSharedSendBinding : ISendBinding
  public async Task Send(string modelCardId)
  {
    using var manager = _sendOperationManagerFactory.Create();
+    var (fileName, fileSizeBytes) = GetFileInfo();
    await manager.Process(
      Commands,
      modelCardId,
@@ -69,10 +71,24 @@ public sealed class CsiSharedSendBinding : ISendBinding
            )
          );
      },
-      card => card.SendFilter.NotNull().RefreshObjectIds().Select(DecodeObjectIdentifier).ToList()
+      card => card.SendFilter.NotNull().RefreshObjectIds().Select(DecodeObjectIdentifier).ToList(),
+      fileName,
+      fileSizeBytes
    );
  }

+  private (string? fileName, long? fileBytes) GetFileInfo()
+  {
+    string fullPath = _csiApplicationService.SapModel.GetModelFilename(true);
+    if (!File.Exists(fullPath))
+    {
+      return (null, null);
+    }
+
+    var fileInfo = new FileInfo(fullPath);
+    return (fileInfo.Name, fileInfo.Length);
+  }
+
  private ICsiWrapper DecodeObjectIdentifier(string encodedId)
  {
    var (type, name) = ObjectIdentifier.Decode(encodedId);
@@ -0,0 +1,211 @@
+using Microsoft.Extensions.Logging;
+using Speckle.Connectors.Common.Builders;
+using Speckle.Connectors.Common.Conversion;
+using Speckle.Connectors.Common.Operations;
+using Speckle.Connectors.CSiShared.HostApp;
+using Speckle.Connectors.CSiShared.HostApp.Helpers;
+using Speckle.Connectors.CSiShared.Utils;
+using Speckle.Converters.Common;
+using Speckle.Converters.CSiShared;
+using Speckle.Converters.CSiShared.Extensions;
+using Speckle.Converters.CSiShared.Utils;
+using Speckle.Sdk;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Pipelines.Progress;
+using Speckle.Sdk.Pipelines.Send;
+
+namespace Speckle.Connectors.CSiShared.Builders;
+
+/// <summary>
+/// Continuous traversal builder for CSi that streams objects through a <see cref="SendPipeline"/>
+/// for packfile-based uploads. Same conversion logic as <see cref="CsiRootObjectBuilder"/>.
+/// </summary>
+public class CsiContinuousTraversalBuilder : IRootContinuousTraversalBuilder<ICsiWrapper>
+{
+  private readonly IRootToSpeckleConverter _rootToSpeckleConverter;
+  private readonly IConverterSettingsStore<CsiConversionSettings> _converterSettings;
+  private readonly CsiSendCollectionManager _sendCollectionManager;
+  private readonly IMaterialUnpacker _materialUnpacker;
+  private readonly ISectionUnpacker _sectionUnpacker;
+  private readonly ILogger<CsiRootObjectBuilder> _logger;
+  private readonly ISdkActivityFactory _activityFactory;
+  private readonly ICsiApplicationService _csiApplicationService;
+  private readonly AnalysisResultsExtractor _analysisResultsExtractor;
+
+  public CsiContinuousTraversalBuilder(
+    IRootToSpeckleConverter rootToSpeckleConverter,
+    IConverterSettingsStore<CsiConversionSettings> converterSettings,
+    CsiSendCollectionManager sendCollectionManager,
+    IMaterialUnpacker materialUnpacker,
+    ISectionUnpacker sectionUnpacker,
+    ILogger<CsiRootObjectBuilder> logger,
+    ISdkActivityFactory activityFactory,
+    ICsiApplicationService csiApplicationService,
+    AnalysisResultsExtractor analysisResultsExtractor
+  )
+  {
+    _converterSettings = converterSettings;
+    _sendCollectionManager = sendCollectionManager;
+    _materialUnpacker = materialUnpacker;
+    _sectionUnpacker = sectionUnpacker;
+    _rootToSpeckleConverter = rootToSpeckleConverter;
+    _logger = logger;
+    _activityFactory = activityFactory;
+    _csiApplicationService = csiApplicationService;
+    _analysisResultsExtractor = analysisResultsExtractor;
+  }
+
+  public async Task<RootObjectBuilderResult> Build(
+    IReadOnlyList<ICsiWrapper> csiObjects,
+    string projectId,
+    SendPipeline sendPipeline,
+    IProgress<CardProgress> onOperationProgressed,
+    CancellationToken cancellationToken
+  )
+  {
+    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
+      };
+
+    List<SendConversionResult> results = new(csiObjects.Count);
+    int count = 0;
+
+    using (var _ = _activityFactory.Start("Convert all"))
+    {
+      foreach (ICsiWrapper csiObject in csiObjects)
+      {
+        cancellationToken.ThrowIfCancellationRequested();
+        var result = await ConvertCsiObject(csiObject, rootObjectCollection, sendPipeline);
+        results.Add(result);
+
+        count++;
+        onOperationProgressed.Report(
+          new($"Converting objects... ({count:N0} / {csiObjects.Count:N0})", (double)count / csiObjects.Count)
+        );
+        await Task.Yield();
+      }
+    }
+
+    if (results.All(x => x.Status == Status.ERROR))
+    {
+      throw new SpeckleException("Failed to convert all objects");
+    }
+
+    using (var _ = _activityFactory.Start("Process Proxies"))
+    {
+      rootObjectCollection[ProxyKeys.MATERIAL] = _materialUnpacker.UnpackMaterials().ToList();
+      rootObjectCollection[ProxyKeys.SECTION] = _sectionUnpacker.UnpackSections().ToList();
+    }
+
+    // Extract analysis results (if applicable)
+    var objectSelectionSummary = GetObjectSummary(csiObjects);
+    var selectedCasesAndCombinations = _converterSettings.Current.SelectedLoadCasesAndCombinations;
+    var requestedResultTypes = _converterSettings.Current.SelectedResultTypes;
+
+    if (selectedCasesAndCombinations?.Count > 0)
+    {
+      if (requestedResultTypes == null || requestedResultTypes.Count == 0)
+      {
+        throw new SpeckleException(
+          "Adjust publish settings - no result type input for the requested load cases and combinations"
+        );
+      }
+
+      if (!_csiApplicationService.SapModel.GetModelIsLocked())
+      {
+        throw new SpeckleException("Model unlocked, no access to analysis results");
+      }
+
+      try
+      {
+        var analysisResults = _analysisResultsExtractor.ExtractAnalysisResults(
+          selectedCasesAndCombinations,
+          requestedResultTypes,
+          objectSelectionSummary
+        );
+        rootObjectCollection[RootKeys.ANALYSIS_RESULTS] = analysisResults;
+      }
+      catch (Exception ex)
+      {
+        throw new SpeckleException("Analysis result extraction failed", ex);
+      }
+    }
+
+    // Process root collection and wait for all uploads
+    await sendPipeline.Process(rootObjectCollection);
+    await sendPipeline.WaitForUpload();
+
+    return new RootObjectBuilderResult(rootObjectCollection, results);
+  }
+
+  private async Task<SendConversionResult> ConvertCsiObject(
+    ICsiWrapper csiObject,
+    Collection typeCollection,
+    SendPipeline sendPipeline
+  )
+  {
+    string sourceType = csiObject.ObjectName;
+    string applicationId = csiObject switch
+    {
+      CsiJointWrapper jointWrapper => jointWrapper.GetSpeckleApplicationId(_csiApplicationService.SapModel),
+      CsiFrameWrapper frameWrapper => frameWrapper.GetSpeckleApplicationId(_csiApplicationService.SapModel),
+      CsiCableWrapper cableWrapper => cableWrapper.GetSpeckleApplicationId(_csiApplicationService.SapModel),
+      CsiTendonWrapper tendonWrapper => tendonWrapper.ObjectName,
+      CsiShellWrapper shellWrapper => shellWrapper.GetSpeckleApplicationId(_csiApplicationService.SapModel),
+      CsiSolidWrapper solidWrapper => solidWrapper.GetSpeckleApplicationId(_csiApplicationService.SapModel),
+      CsiLinkWrapper linkWrapper => linkWrapper.GetSpeckleApplicationId(_csiApplicationService.SapModel),
+      _ => throw new ArgumentException($"Unsupported wrapper type: {csiObject.GetType()}", nameof(csiObject))
+    };
+
+    try
+    {
+      Base converted = _rootToSpeckleConverter.Convert(csiObject);
+
+      var collection = _sendCollectionManager.AddObjectCollectionToRoot(converted, typeCollection);
+
+      // NOTE: this is the main part that differentiate from the main root object builder
+      var reference = await sendPipeline.Process(converted).ConfigureAwait(false);
+      collection.elements.Add(reference);
+
+      return new(Status.SUCCESS, applicationId, sourceType, reference);
+    }
+    catch (NotImplementedException ex)
+    {
+      _logger.LogError(ex, "Failed to convert object {sourceType}", sourceType);
+      return new(Status.WARNING, applicationId, sourceType, null, ex);
+    }
+    catch (Exception ex) when (!ex.IsFatal())
+    {
+      _logger.LogError(ex, "Failed to convert object {sourceType}", sourceType);
+      return new(Status.ERROR, applicationId, sourceType, null, ex);
+    }
+  }
+
+  private Dictionary<ModelObjectType, List<string>> GetObjectSummary(IReadOnlyList<ICsiWrapper> csiObjects) =>
+    csiObjects
+      .GroupBy(csiObject => csiObject.ObjectType)
+      .ToDictionary(group => group.Key, group => group.Select(obj => obj.Name).ToList());
+
+  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());
+  }
+}
@@ -13,6 +13,7 @@ using Speckle.Sdk;
 using Speckle.Sdk.Logging;
 using Speckle.Sdk.Models;
 using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Pipelines.Progress;

 namespace Speckle.Connectors.CSiShared.Builders;

@@ -43,6 +43,7 @@ public static class ServiceRegistration
    services.AddScoped<ISendFilter, CsiSharedSelectionFilter>();
    services.AddScoped<CsiSendCollectionManager>();
    services.AddScoped<IRootObjectBuilder<ICsiWrapper>, CsiRootObjectBuilder>();
+    services.AddScoped<IRootContinuousTraversalBuilder<ICsiWrapper>, CsiContinuousTraversalBuilder>();
    services.AddScoped<SendOperation<ICsiWrapper>>();

    services.AddScoped<CsiMaterialPropertyExtractor>();
@@ -29,6 +29,7 @@
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\IApplicationSectionPropertyExtractor.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\ISectionPropertyExtractor.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)HostApp\Helpers\ISectionUnpacker.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\CsiContinuousTraversalBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\CsiRootObjectBuilder.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Settings\ToSpeckleSettingsManager.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Plugin\CsiPluginBase.cs" />
@@ -73,8 +73,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -169,6 +169,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "Microsoft.CSharp": "4.7.0",
+          "Microsoft.Data.Sqlite": "7.0.5",
+          "Microsoft.Extensions.DependencyInjection.Abstractions": "2.2.0",
+          "Microsoft.Extensions.Logging": "2.2.0",
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@@ -73,8 +73,8 @@
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@@ -338,35 +359,12 @@
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@@ -73,8 +73,8 @@
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@@ -338,35 +359,12 @@
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@@ -79,8 +79,8 @@
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@@ -338,35 +359,12 @@
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@@ -340,35 +361,12 @@
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-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    },
    ".NETFramework,Version=v4.8/win-x64": {
@@ -6,32 +6,22 @@ using Speckle.Sdk;

 namespace Speckle.Connector.Navisworks.Bindings;

-public class NavisworksBasicConnectorBinding : IBasicConnectorBinding
+public class NavisworksBasicConnectorBinding(
+  IBrowserBridge parent,
+  DocumentModelStore store,
+  ISpeckleApplication speckleApplication
+) : IBasicConnectorBinding
 {
  public string Name => "baseBinding";
-  public IBrowserBridge Parent { get; }
-  public BasicConnectorBindingCommands Commands { get; }
+  public IBrowserBridge Parent { get; } = parent;

-  private readonly DocumentModelStore _store;
-  private readonly ISpeckleApplication _speckleApplication;
+  public BasicConnectorBindingCommands Commands { get; } = new(parent);

-  public NavisworksBasicConnectorBinding(
-    IBrowserBridge parent,
-    DocumentModelStore store,
-    ISpeckleApplication speckleApplication
-  )
-  {
-    Parent = parent;
-    _store = store;
-    _speckleApplication = speckleApplication;
-    Commands = new BasicConnectorBindingCommands(parent);
-  }
+  public string GetSourceApplicationName() => speckleApplication.Slug;

-  public string GetSourceApplicationName() => _speckleApplication.Slug;
+  public string GetSourceApplicationVersion() => speckleApplication.HostApplicationVersion;

-  public string GetSourceApplicationVersion() => _speckleApplication.HostApplicationVersion;
-
-  public string GetConnectorVersion() => _speckleApplication.SpeckleVersion;
+  public string GetConnectorVersion() => speckleApplication.SpeckleVersion;

  public DocumentInfo? GetDocumentInfo() =>
    NavisworksApp.ActiveDocument is null || NavisworksApp.ActiveDocument.Models.Count == 0
@@ -42,15 +32,15 @@ public class NavisworksBasicConnectorBinding : IBasicConnectorBinding
        NavisworksApp.ActiveDocument.GetHashCode().ToString()
      );

-  public DocumentModelStore GetDocumentState() => _store;
+  public DocumentModelStore GetDocumentState() => store;

-  public void AddModel(ModelCard model) => _store.AddModel(model);
+  public void AddModel(ModelCard model) => store.AddModel(model);

-  public void UpdateModel(ModelCard model) => _store.UpdateModel(model);
+  public void UpdateModel(ModelCard model) => store.UpdateModel(model);

-  public void RemoveModel(ModelCard model) => _store.RemoveModel(model);
+  public void RemoveModel(ModelCard model) => store.RemoveModel(model);

-  public void RemoveModels(List<ModelCard> models) => _store.RemoveModels(models);
+  public void RemoveModels(List<ModelCard> models) => store.RemoveModels(models);

  public Task HighlightModel(string modelCardId) => Task.CompletedTask;

@@ -1,6 +1,6 @@
-using Speckle.Connector.Navisworks.Services;
 using Speckle.Connectors.DUI.Bindings;
 using Speckle.Connectors.DUI.Bridge;
+using Speckle.Converter.Navisworks.Services;

 namespace Speckle.Connector.Navisworks.Bindings;

@@ -1,9 +1,10 @@
+using System.IO;
+using Autodesk.Navisworks.Api;
 using Microsoft.Extensions.DependencyInjection;
 using Speckle.Connector.Navisworks.Operations.Send.Filters;
 using Speckle.Connector.Navisworks.Operations.Send.Settings;
 using Speckle.Connector.Navisworks.Services;
 using Speckle.Connectors.Common.Cancellation;
-using Speckle.Connectors.Common.Operations;
 using Speckle.Connectors.Common.Threading;
 using Speckle.Connectors.DUI.Bindings;
 using Speckle.Connectors.DUI.Bridge;
@@ -12,9 +13,11 @@ using Speckle.Connectors.DUI.Models;
 using Speckle.Connectors.DUI.Models.Card;
 using Speckle.Connectors.DUI.Models.Card.SendFilter;
 using Speckle.Connectors.DUI.Settings;
+using Speckle.Converter.Navisworks.Services;
 using Speckle.Converter.Navisworks.Settings;
 using Speckle.Converters.Common;
 using Speckle.Sdk.Common;
+using Speckle.Sdk.Pipelines.Progress;

 namespace Speckle.Connector.Navisworks.Bindings;

@@ -58,12 +61,12 @@ public class NavisworksSendBinding : ISendBinding

  private static void SubscribeToNavisworksEvents() { }

-  // Do not change the behavior/scope of this class on send binding unless make sure the behavior is same. Otherwise, we might not be able to update list of saved sets.
+  // WARNING: Changes to filter behavior here must match everywhere filters are used, or saved sets won't update correctly
  public List<ISendFilter> GetSendFilters() =>
    [
      new NavisworksSelectionFilter() { IsDefault = true },
-      new NavisworksSavedSetsFilter(new ElementSelectionService()),
-      new NavisworksSavedViewsFilter(new ElementSelectionService())
+      new NavisworksSavedSetsFilter(new ConnectorElementSelectionService()),
+      new NavisworksSavedViewsFilter(new ConnectorElementSelectionService())
    ];

  public List<ICardSetting> GetSendSettings() =>
@@ -82,7 +85,27 @@ public class NavisworksSendBinding : ISendBinding
  private async Task SendInternal(string modelCardId)
  {
    using var manager = _sendOperationManagerFactory.Create();
-    await manager.Process(Commands, modelCardId, InitializeConverterSettings, GetNavisworksModelItems);
+    var (fileName, fileSizeBytes) = GetFileInfo();
+    await manager.Process(
+      Commands,
+      modelCardId,
+      InitializeConverterSettings,
+      GetNavisworksModelItems,
+      fileName,
+      fileSizeBytes
+    );
+  }
+
+  private (string? fileName, long? fileSizeBytes) GetFileInfo()
+  {
+    Document? activeDoc = NavisworksApp.ActiveDocument;
+    if (activeDoc is null || !File.Exists(activeDoc.FileName))
+    {
+      return (null, null);
+    }
+
+    FileInfo fileInfo = new(activeDoc.FileName);
+    return (fileInfo.Name, fileInfo.Length);
  }

  private void InitializeConverterSettings(IServiceProvider serviceProvider, SenderModelCard modelCard) =>
@@ -105,6 +128,7 @@ public class NavisworksSendBinding : ISendBinding
  )
  {
    var selectedPaths = modelCard.SendFilter.NotNull().RefreshObjectIds();
+
    var convertHiddenElementsSetting =
      modelCard.Settings!.FirstOrDefault(s => s.Id == "convertHiddenElements")?.Value as bool? ?? false;
    var message = convertHiddenElementsSetting
@@ -115,30 +139,78 @@ public class NavisworksSendBinding : ISendBinding
    {
      throw new SpeckleSendFilterException(message);
    }
+
    onOperationProgressed.Report(new CardProgress("Getting selection...", null));
    await Task.CompletedTask;

-    var modelItems = new List<NAV.ModelItem>();
+    int estimatedCapacity = selectedPaths.Count * 10;
+    var modelItems = new List<NAV.ModelItem>(estimatedCapacity);
    double count = 0;
+
    foreach (var path in selectedPaths)
    {
      onOperationProgressed.Report(new CardProgress("Getting selection...", count / selectedPaths.Count));
      await Task.CompletedTask;
+
      var modelItem = _selectionService.GetModelItemFromPath(path);
-      modelItems.AddRange(_selectionService.GetGeometryNodes(modelItem).Where(_selectionService.IsVisible));
+      var hasChildren = modelItem.Children.Any();
+
+      if (hasChildren)
+      {
+        int nodesVisited = 0;
+        int hiddenBranchesPruned = 0;
+        const int REPORT_INTERVAL = 1000;
+
+        void TraverseWithProgress(NAV.ModelItem node)
+        {
+          nodesVisited++;
+
+          if (nodesVisited % REPORT_INTERVAL == 0)
+          {
+            onOperationProgressed.Report(
+              new CardProgress(
+                $"Expanding tree: {nodesVisited} visited, {modelItems.Count} with geometry, {hiddenBranchesPruned} hidden",
+                null
+              )
+            );
+            Task.Delay(1).Wait();
+          }
+
+          if (!_selectionService.IsVisible(node))
+          {
+            hiddenBranchesPruned++;
+            return;
+          }
+
+          if (node.HasGeometry)
+          {
+            modelItems.Add(node);
+          }
+
+          foreach (var child in node.Children)
+          {
+            TraverseWithProgress(child);
+          }
+        }
+
+        TraverseWithProgress(modelItem);
+      }
+      else
+      {
+        if (modelItem.HasGeometry && _selectionService.IsVisible(modelItem))
+        {
+          modelItems.Add(modelItem);
+        }
+      }
+
      count++;
    }
+
    return modelItems.Count == 0 ? throw new SpeckleSendFilterException(message) : modelItems;
  }

  public void CancelSend(string modelCardId) => _cancellationManager.CancelOperation(modelCardId);

-  /// <summary>
-  /// Cancels all outstanding send operations for the current document.
-  /// This method is called when the active document changes, to ensure
-  /// that any in-progress send operations are properly canceled before
-  /// the new document is loaded.
-  /// </summary>
  public void CancelAllSendOperations()
  {
    foreach (var modelCardId in _store.GetSenders().Select(m => m.ModelCardId))
@@ -15,7 +15,7 @@ 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.Constants.Registers;
 using Speckle.Converter.Navisworks.Settings;
 using Speckle.Converters.Common;
 using Speckle.Sdk.Models.GraphTraversal;
@@ -53,17 +53,18 @@ 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
    serviceCollection.AddScoped<IRootObjectBuilder<NAV.ModelItem>, NavisworksRootObjectBuilder>();
+    serviceCollection.AddScoped<IRootContinuousTraversalBuilder<NAV.ModelItem>, NavisworksContinuousTraversalBuilder>();
    serviceCollection.AddScoped<SendOperation<NAV.ModelItem>>();
    serviceCollection.AddSingleton(DefaultTraversal.CreateTraversalFunc());
    serviceCollection.AddSingleton<IOperationProgressManager, OperationProgressManager>();

+    // Registers and caches
+    serviceCollection.AddScoped<IInstanceFragmentRegistry, InstanceFragmentRegistry>();
+
    // Register Intercom/interop
    serviceCollection.AddSingleton<NavisworksDocumentModelStore>();
    serviceCollection.AddSingleton<DocumentModelStore>(sp => sp.GetRequiredService<NavisworksDocumentModelStore>());
@@ -73,6 +74,9 @@ public static class NavisworksConnectorServiceRegistration
    serviceCollection.AddScoped<ISendFilter, NavisworksSelectionFilter>();
    serviceCollection.AddScoped<ISendFilter, NavisworksSavedSetsFilter>();
    serviceCollection.AddScoped<ISendFilter, NavisworksSavedViewsFilter>();
-    serviceCollection.AddScoped<IElementSelectionService, ElementSelectionService>();
+    serviceCollection.AddScoped<
+      Converter.Navisworks.Services.IElementSelectionService,
+      ConnectorElementSelectionService
+    >();
  }
 }
@@ -1,31 +1,12 @@
-using Speckle.InterfaceGenerator;
-using static Speckle.Converter.Navisworks.Helpers.ElementSelectionHelper;
+namespace Speckle.Connector.Navisworks.Services;

-namespace Speckle.Connector.Navisworks.Services;
-
-[GenerateAutoInterface]
-public class ElementSelectionService : IElementSelectionService
+/// <summary>
+/// Connector-specific element selection service that extends the converter's base implementation.
+/// Inherits the cached visibility checking and path resolution from the converter layer.
+/// </summary>
+public class ConnectorElementSelectionService : Converter.Navisworks.Services.ElementSelectionService
 {
-  private readonly Dictionary<Guid, bool> _visibleCache = new();
-
-  public string GetModelItemPath(NAV.ModelItem modelItem) => ResolveModelItemToIndexPath(modelItem);
-
-  public NAV.ModelItem GetModelItemFromPath(string path) => ResolveIndexPathToModelItem(path);
-
-  public bool IsVisible(NAV.ModelItem modelItem)
-  {
-    var key = modelItem.InstanceGuid;
-    if (_visibleCache.TryGetValue(key, out var isVisible))
-    {
-      return isVisible;
-    }
-    //same as ElementSelectionHelper.IsElementVisible
-    foreach (var item in modelItem.AncestorsAndSelf)
-    {
-      _visibleCache[item.InstanceGuid] = !item.IsHidden;
-    }
-    return _visibleCache[key];
-  }
-
-  public IEnumerable<NAV.ModelItem> GetGeometryNodes(NAV.ModelItem modelItem) => ResolveGeometryLeafNodes(modelItem);
+  // This inherits all functionality from the converter's ElementSelectionService
+  // including cached IsVisible, GetModelItemPath, GetModelItemFromPath, and GetGeometryNodes
+  // Connector-specific extensions can be added here if needed in the future
 }
@@ -1,6 +1,6 @@
 using Microsoft.Extensions.Logging;
-using Speckle.Connector.Navisworks.Services;
 using Speckle.Converter.Navisworks.Helpers;
+using Speckle.Converter.Navisworks.Services;
 using Speckle.Converter.Navisworks.Settings;
 using Speckle.Converters.Common;
 using Speckle.Sdk;
@@ -130,16 +130,20 @@ public class NavisworksColorUnpacker(
    var comSelection = ComBridge.ToInwOpSelection([modelItem]);
    try
    {
-      var pathsCollection = comSelection.Paths();
+      var paths = comSelection.Paths();
      try
      {
-        foreach (ComApi.InwOaPath path in pathsCollection)
+        foreach (ComApi.InwOaPath path in paths)
        {
-          var fragmentsCollection = path.Fragments();
+          GC.KeepAlive(path);
+
+          var fragments = path.Fragments();
          try
          {
-            foreach (ComApi.InwOaFragment3 fragment in fragmentsCollection.OfType<ComApi.InwOaFragment3>())
+            foreach (ComApi.InwOaFragment3 fragment in fragments)
            {
+              GC.KeepAlive(fragment);
+
              fragment.GenerateSimplePrimitives(ComApi.nwEVertexProperty.eNORMAL, primitiveChecker);

              if (primitiveChecker.HasTriangles)
@@ -150,9 +154,9 @@ public class NavisworksColorUnpacker(
          }
          finally
          {
-            if (fragmentsCollection != null)
+            if (fragments != null)
            {
-              System.Runtime.InteropServices.Marshal.ReleaseComObject(fragmentsCollection);
+              System.Runtime.InteropServices.Marshal.ReleaseComObject(fragments);
            }
          }
        }
@@ -161,9 +165,9 @@ public class NavisworksColorUnpacker(
      }
      finally
      {
-        if (pathsCollection != null)
+        if (paths != null)
        {
-          System.Runtime.InteropServices.Marshal.ReleaseComObject(pathsCollection);
+          System.Runtime.InteropServices.Marshal.ReleaseComObject(paths);
        }
      }
    }
@@ -120,17 +120,6 @@ public sealed class NavisworksDocumentEvents
    }
  }

-  private void UnsubscribeFromDocumentModelEvents(object _)
-  {
-    var activeDocument = NavisworksApp.ActiveDocument;
-    if (activeDocument != null)
-    {
-      UnsubscribeFromModelEvents(activeDocument);
-    }
-
-    _isSubscribed = false;
-  }
-
  private void UnsubscribeFromModelEvents(NAV.Document document)
  {
    document.Models.CollectionChanged -= HandleDocumentModelCountChanged;
@@ -1,22 +1,18 @@
-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.Services;
 using Speckle.Converter.Navisworks.Settings;
-using Speckle.Converter.Navisworks.ToSpeckle;
 using Speckle.Converters.Common;
 using Speckle.Objects.Other;
 using Speckle.Sdk;
+using static Speckle.Converter.Navisworks.Constants.MaterialConstants;

 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>(
@@ -74,66 +70,6 @@ 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;

@@ -162,7 +98,7 @@ public class NavisworksMaterialUnpacker(
        );

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

        var itemCategory = navisworksObject.PropertyCategories.FindCategoryByDisplayName("Item");
        if (itemCategory != null)
@@ -188,14 +124,14 @@ 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]
+            objects = [finalId]
          };
        }
      }
@@ -219,9 +155,7 @@ 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 : $"{DEFAULT_MATERIAL_NAME_PREFIX}{Math.Abs(color.ToArgb())}",
      opacity = 1 - transparency,
      metalness = 0,
      roughness = 1,
@@ -1,7 +1,7 @@
-using Speckle.Connector.Navisworks.Services;
-using Speckle.Connectors.DUI.Exceptions;
+using Speckle.Connectors.DUI.Exceptions;
 using Speckle.Connectors.DUI.Models.Card.SendFilter;
 using Speckle.Connectors.DUI.Utils;
+using Speckle.Converter.Navisworks.Services;

 namespace Speckle.Connector.Navisworks.Operations.Send.Filters;

@@ -1,7 +1,7 @@
-using Speckle.Connector.Navisworks.Services;
-using Speckle.Connectors.DUI.Exceptions;
+using Speckle.Connectors.DUI.Exceptions;
 using Speckle.Connectors.DUI.Models.Card.SendFilter;
 using Speckle.Connectors.DUI.Utils;
+using Speckle.Converter.Navisworks.Services;

 namespace Speckle.Connector.Navisworks.Operations.Send.Filters;

@@ -48,8 +48,6 @@ public class NavisworksSavedViewsFilter : DiscriminatedObject, ISendFilterSelect
      return objectIds;
    }

-    var savedViews = NavisworksApp.ActiveDocument.SavedViewpoints;
-
    foreach (var savedViewItem in SelectedItems.Select(item => ResolveSavedView(item.Id)))
    {
      // Get the visible elements in the saved view.
@@ -82,12 +80,12 @@ public class NavisworksSavedViewsFilter : DiscriminatedObject, ISendFilterSelect
  {
    var objectIds = new List<string>();

-    // THIS IS COMMENTED OUT AS IT IS LEGACY DEFENSIVE BEHAVIOUR - DISCUSSION REQUIRED
+    // THIS IS COMMENTED OUT AS IT IS LEGACY DEFENSIVE BEHAVIOR - DISCUSSION REQUIRED
    // if (!savedView.ContainsVisibilityOverrides)
    // {
    //   // We check this again as the view settings may have changed in the saved card.
    //   // If the saved view does not contain visibility overrides, this is effectively everything in the model.
-    //   // This will need to be the documented behaviour.
+    //   // This will need to be the documented behavior.
    //   throw new SpeckleSendFilterException(
    //     "Saved view does not contain visibility overrides. This would effectively publish everything in the model."
    //   );
@@ -154,7 +152,7 @@ public class NavisworksSavedViewsFilter : DiscriminatedObject, ISendFilterSelect
      switch (item)
      {
        // case NAV.SavedViewpoint { ContainsVisibilityOverrides: false }:
-        // Legacy defensive behaviour: skip viewpoints without visibility overrides.
+        // Legacy defensive behavior: skip viewpoints without visibility overrides.
        // Essentially, send everything, or whatever the current view state for hidden elements is.
        // break;
        case NAV.SavedViewpointAnimationCut:
@@ -1,4 +1,4 @@
-using Speckle.Converter.Navisworks.Constants;
+using static Speckle.Converter.Navisworks.Constants.PathConstants;

 namespace Speckle.Connector.Navisworks.Operations.Send.Filters;

@@ -15,6 +15,6 @@ public static class SavedItemHelpers
      current = current.Parent;
    }

-    return string.Join(PathConstants.SET_SEPARATOR, pathParts);
+    return string.Join(SET_SEPARATOR, pathParts);
  }
 }
@@ -1,5 +1,5 @@
 using Speckle.Connector.Navisworks.Services;
-using Speckle.Converter.Navisworks.Constants;
+using static Speckle.Converter.Navisworks.Constants.PathConstants;

 namespace Speckle.Connector.Navisworks.Operations.Send;

@@ -10,29 +10,29 @@ public static class GeometryNodeMerger
 {
  /// <summary>
  /// Groups sibling geometry nodes based on material properties for merging.
-  /// Only merges nodes that share the same parent and have identical material properties.
+  /// This only merges nodes that share the same parent and have identical material properties.
  /// </summary>
  /// <param name="nodes">The collection of ModelItems to process</param>
  /// <returns>Dictionary mapping parent paths (with material signature suffix) to their mergeable child nodes</returns>
  public static Dictionary<string, List<NAV.ModelItem>> GroupSiblingGeometryNodes(IReadOnlyList<NAV.ModelItem> nodes)
  {
-    var selectionService = new ElementSelectionService();
+    var selectionService = new ConnectorElementSelectionService();

    // Group nameless geometry nodes by parent path and material signature
    var mergeableGroups = nodes
      .Where(node => node.HasGeometry && string.IsNullOrEmpty(node.DisplayName)) // Only anonymous geometry nodes
      .GroupBy(node =>
      {
-        // Get parent path
+        // Get the parent path
        var path = selectionService.GetModelItemPath(node);
-        var lastSeparatorIndex = path.LastIndexOf(PathConstants.SEPARATOR);
+        var lastSeparatorIndex = path.LastIndexOf(SEPARATOR);
        var parentPath = lastSeparatorIndex == -1 ? path : path[..lastSeparatorIndex];

        // Generate material signature
        string signature = GenerateSignature(node);

        // Combine parent path with signature
-        return $"{parentPath}{PathConstants.MATERIAL_SEPARATOR}{signature}";
+        return $"{parentPath}{MATERIAL_SEPARATOR}{signature}";
      })
      .Where(group => group.Count() > 1) // Only include groups with multiple children
      .ToDictionary(group => group.Key, group => group.ToList());
@@ -95,7 +95,7 @@ public static class GeometryNodeMerger
    // Build a consistent string representation of all properties
    var hashInput = new System.Text.StringBuilder();

-    // Sort keys to ensure consistent order
+    // Sort keys to ensure a consistent order
    var sortedKeys = properties.Keys.OrderBy(k => k).ToList();

    foreach (var key in sortedKeys)
@@ -139,7 +139,7 @@ public static class GeometryNodeMerger
  /// </summary>
  private static string GetMaterialName(NAV.ModelItem node)
  {
-    // Check Item category for material name
+    // Check the Item category for material name
    var itemCategory = node.PropertyCategories.FindCategoryByDisplayName("Item");
    if (itemCategory != null)
    {
@@ -0,0 +1,400 @@
+using Microsoft.Extensions.Logging;
+using Speckle.Connector.Navisworks.HostApp;
+using Speckle.Connectors.Common.Builders;
+using Speckle.Connectors.Common.Conversion;
+using Speckle.Converter.Navisworks.Helpers;
+using Speckle.Converter.Navisworks.Services;
+using Speckle.Converter.Navisworks.Settings;
+using Speckle.Converters.Common;
+using Speckle.Objects.Data;
+using Speckle.Sdk;
+using Speckle.Sdk.Logging;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Models.Instances;
+using Speckle.Sdk.Pipelines.Progress;
+using Speckle.Sdk.Pipelines.Send;
+using static Speckle.Connector.Navisworks.Operations.Send.GeometryNodeMerger;
+using static Speckle.Connectors.Common.Operations.ProxyKeys;
+using static Speckle.Converter.Navisworks.Constants.InstanceConstants;
+
+namespace Speckle.Connector.Navisworks.Operations.Send;
+
+/// <summary>
+/// Continuous traversal builder for Navisworks that streams objects through a <see cref="SendPipeline"/>
+/// for packfile-based uploads. Same conversion/grouping logic as <see cref="NavisworksRootObjectBuilder"/>,
+/// but processes final elements through the pipeline after all post-processing is complete.
+/// </summary>
+public class NavisworksContinuousTraversalBuilder(
+  IRootToSpeckleConverter rootToSpeckleConverter,
+  IConverterSettingsStore<NavisworksConversionSettings> converterSettings,
+  ILogger<NavisworksContinuousTraversalBuilder> logger,
+  ISdkActivityFactory activityFactory,
+  NavisworksMaterialUnpacker materialUnpacker,
+  NavisworksColorUnpacker colorUnpacker,
+  Speckle.Converter.Navisworks.Constants.Registers.IInstanceFragmentRegistry instanceRegistry,
+  IElementSelectionService elementSelectionService,
+  IUiUnitsCache uiUnitsCache
+) : IRootContinuousTraversalBuilder<NAV.ModelItem>
+{
+  private bool SkipNodeMerging { get; set; }
+  private bool DisableGroupingForInstanceTesting { get; set; }
+
+  public async Task<RootObjectBuilderResult> Build(
+    IReadOnlyList<NAV.ModelItem> navisworksModelItems,
+    string projectId,
+    SendPipeline sendPipeline,
+    IProgress<CardProgress> onOperationProgressed,
+    CancellationToken cancellationToken
+  )
+  {
+#if DEBUG
+    SkipNodeMerging = false;
+    DisableGroupingForInstanceTesting = false;
+#endif
+    using var activity = activityFactory.Start("Build");
+
+    ValidateInputs(navisworksModelItems, projectId, onOperationProgressed);
+
+    var rootCollection = InitializeRootCollection();
+    (Dictionary<string, Base?> convertedElements, List<SendConversionResult> conversionResults) =
+      await ConvertModelItemsAsync(navisworksModelItems, onOperationProgressed, cancellationToken);
+
+    ValidateConversionResults(conversionResults);
+
+    var groupedNodes = SkipNodeMerging ? [] : GroupSiblingGeometryNodes(navisworksModelItems);
+    var finalElements = BuildFinalElements(convertedElements, groupedNodes);
+
+    await AddProxiesToCollection(rootCollection, navisworksModelItems, groupedNodes);
+
+    AddInstanceDefinitionsToCollection(rootCollection, ref finalElements);
+
+    // Process each final element through the send pipeline
+    var processedElements = new List<Base>(finalElements.Count);
+    foreach (var element in finalElements)
+    {
+      cancellationToken.ThrowIfCancellationRequested();
+      // NOTE: this is the main part that differentiate from the main root object builder
+      var reference = await sendPipeline.Process(element).ConfigureAwait(false);
+      processedElements.Add(reference);
+    }
+
+    rootCollection.elements = processedElements;
+
+    // Process the root collection and wait for all uploads to complete
+    await sendPipeline.Process(rootCollection);
+    await sendPipeline.WaitForUpload();
+
+    return new RootObjectBuilderResult(rootCollection, conversionResults);
+  }
+
+  private static void ValidateInputs(
+    IReadOnlyList<NAV.ModelItem> navisworksModelItems,
+    string projectId,
+    IProgress<CardProgress> onOperationProgressed
+  )
+  {
+    if (!navisworksModelItems.Any())
+    {
+      throw new SpeckleException("No objects to convert");
+    }
+
+    if (navisworksModelItems == null)
+    {
+      throw new ArgumentNullException(nameof(navisworksModelItems));
+    }
+
+    if (onOperationProgressed == null || projectId == null)
+    {
+      throw new ArgumentNullException(
+        onOperationProgressed == null ? nameof(onOperationProgressed) : nameof(projectId)
+      );
+    }
+  }
+
+  private Collection InitializeRootCollection() =>
+    new()
+    {
+      name = NavisworksApp.ActiveDocument.Title ?? "Unnamed model",
+      ["units"] = converterSettings.Current.Derived.SpeckleUnits
+    };
+
+  private Task<(Dictionary<string, Base?> converted, List<SendConversionResult> results)> ConvertModelItemsAsync(
+    IReadOnlyList<NAV.ModelItem> navisworksModelItems,
+    IProgress<CardProgress> onOperationProgressed,
+    CancellationToken cancellationToken
+  )
+  {
+    var results = new List<SendConversionResult>(navisworksModelItems.Count);
+    var convertedBases = new Dictionary<string, Base?>();
+    int processedCount = 0;
+    int totalCount = navisworksModelItems.Count;
+
+    foreach (var item in navisworksModelItems)
+    {
+      cancellationToken.ThrowIfCancellationRequested();
+      var converted = ConvertNavisworksItem(item, convertedBases);
+      results.Add(converted);
+
+      processedCount++;
+      onOperationProgressed.Report(new CardProgress("Converting", (double)processedCount / totalCount));
+    }
+
+    return Task.FromResult((convertedBases, results));
+  }
+
+  private static void ValidateConversionResults(List<SendConversionResult> results)
+  {
+    if (results.All(x => x.Status == Status.ERROR))
+    {
+      throw new SpeckleException("Failed to convert all objects.");
+    }
+  }
+
+  private List<Base> BuildFinalElements(
+    Dictionary<string, Base?> convertedBases,
+    Dictionary<string, List<NAV.ModelItem>> groupedNodes
+  )
+  {
+    var finalElements = new List<Base>();
+    var processedPaths = new HashSet<string>();
+
+    if (!DisableGroupingForInstanceTesting)
+    {
+      AddGroupedElements(finalElements, convertedBases, groupedNodes, processedPaths);
+      logger.LogInformation(
+        "After grouping: {grouped} paths processed, {elements} elements in collection",
+        processedPaths.Count,
+        finalElements.Count
+      );
+    }
+    else
+    {
+      logger.LogInformation("Grouping disabled for instance testing");
+    }
+
+    if (converterSettings.Current.User.PreserveModelHierarchy)
+    {
+      logger.LogInformation("Building hierarchy (PreserveModelHierarchy=true)");
+      var hierarchyBuilder = new NavisworksHierarchyBuilder(
+        convertedBases,
+        rootToSpeckleConverter,
+        elementSelectionService
+      );
+
+      return hierarchyBuilder.BuildHierarchy();
+    }
+
+    logger.LogInformation("Adding remaining elements (flat mode)");
+    AddRemainingElements(finalElements, convertedBases, processedPaths);
+
+    logger.LogInformation("Final elements count: {count}", finalElements.Count);
+    return finalElements;
+  }
+
+  private void AddGroupedElements(
+    List<Base> finalElements,
+    Dictionary<string, Base?> convertedBases,
+    Dictionary<string, List<NAV.ModelItem>> groupedNodes,
+    HashSet<string> processedPaths
+  )
+  {
+    foreach (var group in groupedNodes)
+    {
+      var siblingBases = new List<Base>(group.Value.Count);
+      foreach (var itemPath in group.Value.Select(elementSelectionService.GetModelItemPath))
+      {
+        processedPaths.Add(itemPath);
+        if (convertedBases.TryGetValue(itemPath, out var convertedBase) && convertedBase != null)
+        {
+          siblingBases.Add(convertedBase);
+        }
+      }
+
+      if (siblingBases.Count > 0)
+      {
+        finalElements.Add(CreateNavisworksObject(group.Key, siblingBases));
+      }
+    }
+  }
+
+  private void AddRemainingElements(
+    List<Base> finalElements,
+    Dictionary<string, Base?> convertedBases,
+    HashSet<string> processedPaths
+  )
+  {
+    foreach (var kvp in convertedBases.Where(kvp => !processedPaths.Contains(kvp.Key)))
+    {
+      switch (kvp.Value)
+      {
+        case null:
+          continue;
+        case Collection collection:
+          finalElements.Add(collection);
+          break;
+        default:
+          if (CreateNavisworksObject(kvp.Value) is { } navisworksObject)
+          {
+            finalElements.Add(navisworksObject);
+          }
+
+          break;
+      }
+    }
+  }
+
+  private (string name, string path) GetElementNameAndPath(string applicationId)
+  {
+    var modelItem = elementSelectionService.GetModelItemFromPath(applicationId);
+    var context = HierarchyHelper.ExtractContext(modelItem);
+    return (context.Name, context.Path);
+  }
+
+  private NavisworksObject CreateNavisworksObject(string groupKey, List<Base> siblingBases)
+  {
+    string cleanParentPath = ElementSelectionHelper.GetCleanPath(groupKey);
+    (string name, string path) = GetElementNameAndPath(cleanParentPath);
+
+    int estimatedCapacity = siblingBases.Sum(b => (b["displayValue"] as List<Base>)?.Count ?? 0);
+    var displayValues = new List<Base>(estimatedCapacity);
+    displayValues.AddRange(
+      siblingBases
+        .Where(sibling => sibling["displayValue"] is List<Base>)
+        .SelectMany(sibling => (List<Base>)sibling["displayValue"]!)
+    );
+
+    return new NavisworksObject
+    {
+      name = name,
+      displayValue = displayValues,
+      properties = siblingBases.First()["properties"] as Dictionary<string, object?> ?? [],
+      units = converterSettings.Current.Derived.SpeckleUnits,
+      applicationId = groupKey,
+      ["path"] = path
+    };
+  }
+
+  private NavisworksObject? CreateNavisworksObject(Base convertedBase)
+  {
+    if (convertedBase.applicationId == null)
+    {
+      return null;
+    }
+
+    (string name, string path) = GetElementNameAndPath(convertedBase.applicationId);
+
+    var units = uiUnitsCache.Ensure();
+
+    return new NavisworksObject
+    {
+      name = name,
+      displayValue = convertedBase["displayValue"] as List<Base> ?? [],
+      properties = convertedBase["properties"] as Dictionary<string, object?> ?? [],
+      units = units.ToString(),
+      applicationId = convertedBase.applicationId,
+      ["path"] = path
+    };
+  }
+
+  private Task AddProxiesToCollection(
+    Collection rootCollection,
+    IReadOnlyList<NAV.ModelItem> navisworksModelItems,
+    Dictionary<string, List<NAV.ModelItem>> groupedNodes
+  )
+  {
+    using var _ = activityFactory.Start("UnpackProxies");
+
+    var renderMaterials = materialUnpacker.UnpackRenderMaterial(navisworksModelItems, groupedNodes);
+    if (renderMaterials.Count > 0)
+    {
+      rootCollection[RENDER_MATERIAL] = renderMaterials;
+    }
+
+    var colors = colorUnpacker.UnpackColor(navisworksModelItems, groupedNodes);
+    if (colors.Count > 0)
+    {
+      rootCollection[COLOR] = colors;
+    }
+
+    return Task.CompletedTask;
+  }
+
+  private void AddInstanceDefinitionsToCollection(Collection rootCollection, ref List<Base> finalElements)
+  {
+    using var _ = activityFactory.Start("BuildInstanceDefinitions");
+
+    var allDefinitions = instanceRegistry.GetAllDefinitionGeometries();
+
+    if (allDefinitions.Count == 0)
+    {
+      logger.LogInformation("No instance definitions found - instancing may be disabled");
+      return;
+    }
+
+    logger.LogInformation("Building instance structure for {count} definition groups", allDefinitions.Count);
+
+    var instanceDefinitionProxies = new List<InstanceDefinitionProxy>(allDefinitions.Count);
+
+    int estimatedGeometryCount = allDefinitions.Sum(kvp => kvp.Value.Count);
+    var allDefinitionGeometries = new List<Base>(estimatedGeometryCount);
+
+    foreach (var kvp in allDefinitions)
+    {
+      var groupKey = kvp.Key;
+      var geometries = kvp.Value;
+      var groupKeyPath = groupKey.ToPathString();
+
+      var defProxy = new InstanceDefinitionProxy
+      {
+        name = $"Shared Geometry {groupKeyPath}",
+        objects = geometries.Select(g => g.applicationId ?? "").Where(id => !string.IsNullOrEmpty(id)).ToList(),
+        applicationId = $"{DEFINITION_ID_PREFIX}{groupKeyPath}",
+        maxDepth = 0
+      };
+
+      instanceDefinitionProxies.Add(defProxy);
+      allDefinitionGeometries.AddRange(geometries);
+    }
+
+    rootCollection[INSTANCE_DEFINITION] = instanceDefinitionProxies;
+    var geometryDefinitionsCollection = new Collection
+    {
+      name = "Geometry Definitions",
+      elements = allDefinitionGeometries
+    };
+
+    var objectCollection = new Collection { name = "", elements = finalElements };
+
+    finalElements = [geometryDefinitionsCollection, objectCollection];
+
+    logger.LogInformation(
+      "Added {proxyCount} instance definition proxies and {geomCount} definition geometries",
+      instanceDefinitionProxies.Count,
+      allDefinitionGeometries.Count
+    );
+  }
+
+  private SendConversionResult ConvertNavisworksItem(
+    NAV.ModelItem navisworksItem,
+    Dictionary<string, Base?> convertedBases
+  )
+  {
+    string applicationId = elementSelectionService.GetModelItemPath(navisworksItem);
+    string sourceType = navisworksItem.GetType().Name;
+
+    try
+    {
+      Base converted = rootToSpeckleConverter.Convert(navisworksItem);
+
+      convertedBases[applicationId] = converted;
+
+      return new SendConversionResult(Status.SUCCESS, applicationId, sourceType, converted);
+    }
+    catch (Exception ex) when (!ex.IsFatal())
+    {
+      logger.LogError(ex, "Failed to convert model item {id}", applicationId);
+      return new SendConversionResult(Status.ERROR, applicationId, "ModelItem", null, ex);
+    }
+  }
+}
@@ -1,8 +1,8 @@
-using Speckle.Connector.Navisworks.Services;
-using Speckle.Converter.Navisworks.Constants;
+using Speckle.Converter.Navisworks.Services;
 using Speckle.Converters.Common;
 using Speckle.Sdk.Models;
 using Speckle.Sdk.Models.Collections;
+using static Speckle.Converter.Navisworks.Constants.PathConstants;

 namespace Speckle.Connector.Navisworks.Operations.Send;

@@ -59,8 +59,8 @@ public class NavisworksHierarchyBuilder
    allPaths.Sort(
      (a, b) =>
      {
-        var depthA = a.Count(c => c == PathConstants.SEPARATOR);
-        var depthB = b.Count(c => c == PathConstants.SEPARATOR);
+        var depthA = a.Count(c => c == SEPARATOR);
+        var depthB = b.Count(c => c == SEPARATOR);
        return depthB.CompareTo(depthA); // <- Sort in ascending order of path length
      }
    );
@@ -126,7 +126,7 @@ public class NavisworksHierarchyBuilder

  private static string GetParentPath(string path)
  {
-    var idx = path.LastIndexOf(PathConstants.SEPARATOR);
+    var idx = path.LastIndexOf(SEPARATOR);
    return idx == -1 ? string.Empty : path[..idx];
  }

@@ -1,10 +1,8 @@
-using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging;
 using Speckle.Connector.Navisworks.HostApp;
-using Speckle.Connector.Navisworks.Services;
 using Speckle.Connectors.Common.Builders;
 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;
@@ -14,7 +12,11 @@ using Speckle.Sdk;
 using Speckle.Sdk.Logging;
 using Speckle.Sdk.Models;
 using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Models.Instances;
+using Speckle.Sdk.Pipelines.Progress;
 using static Speckle.Connector.Navisworks.Operations.Send.GeometryNodeMerger;
+using static Speckle.Connectors.Common.Operations.ProxyKeys;
+using static Speckle.Converter.Navisworks.Constants.InstanceConstants;

 namespace Speckle.Connector.Navisworks.Operations.Send;

@@ -26,14 +28,15 @@ public class NavisworksRootObjectBuilder(
  ISdkActivityFactory activityFactory,
  NavisworksMaterialUnpacker materialUnpacker,
  NavisworksColorUnpacker colorUnpacker,
+  Speckle.Converter.Navisworks.Constants.Registers.IInstanceFragmentRegistry instanceRegistry,
  IElementSelectionService elementSelectionService,
-  IUiUnitsCache uiUnitsCache,
-  InstanceStoreManager instanceStoreManager
+  IUiUnitsCache uiUnitsCache
 ) : IRootObjectBuilder<NAV.ModelItem>
 {
+#pragma warning disable CA1823
+#pragma warning restore CA1823
  private bool SkipNodeMerging { get; set; }
-
-  internal NavisworksConversionSettings GetCurrentSettings() => converterSettings.Current;
+  private bool DisableGroupingForInstanceTesting { get; set; }

  public async Task<RootObjectBuilderResult> Build(
    IReadOnlyList<NAV.ModelItem> navisworksModelItems,
@@ -43,14 +46,14 @@ public class NavisworksRootObjectBuilder(
  )
  {
 #if DEBUG
-    SkipNodeMerging = true;
+    SkipNodeMerging = false;
+    DisableGroupingForInstanceTesting = false;
 #endif
    using var activity = activityFactory.Start("Build");

    ValidateInputs(navisworksModelItems, projectId, onOperationProgressed);

    var rootCollection = InitializeRootCollection();
-
    (Dictionary<string, Base?> convertedElements, List<SendConversionResult> conversionResults) =
      await ConvertModelItemsAsync(navisworksModelItems, projectId, onOperationProgressed, cancellationToken);

@@ -58,30 +61,17 @@ public class NavisworksRootObjectBuilder(

    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);
-    }
+    AddInstanceDefinitionsToCollection(rootCollection, ref finalElements);
+    int finalInstanceProxyCount = CountInstanceProxiesRecursive(finalElements);
+    logger.LogInformation(
+      "Final output contains {count} InstanceProxy objects in displayValues",
+      finalInstanceProxyCount
+    );

+    rootCollection.elements = finalElements;
    return new RootObjectBuilderResult(rootCollection, conversionResults);
  }

@@ -127,16 +117,32 @@ public class NavisworksRootObjectBuilder(
    var convertedBases = new Dictionary<string, Base?>();
    int processedCount = 0;
    int totalCount = navisworksModelItems.Count;
+    int instanceProxyCount = 0;

    foreach (var item in navisworksModelItems)
    {
      cancellationToken.ThrowIfCancellationRequested();
      var converted = ConvertNavisworksItem(item, convertedBases, projectId);
      results.Add(converted);
+
+      if (
+        converted.Status == Status.SUCCESS
+        && convertedBases.TryGetValue(elementSelectionService.GetModelItemPath(item), out var convertedBase)
+        && convertedBase?["displayValue"] is List<Base> displayValues
+      )
+      {
+        instanceProxyCount += displayValues.Count(dv => dv.GetType().Name == "InstanceProxy");
+      }
+
      processedCount++;
      onOperationProgressed.Report(new CardProgress("Converting", (double)processedCount / totalCount));
    }

+    logger.LogInformation(
+      "Converted {total} items, found {instanceProxies} InstanceProxy objects",
+      totalCount,
+      instanceProxyCount
+    );
    return Task.FromResult((convertedBases, results));
  }

@@ -155,10 +161,24 @@ public class NavisworksRootObjectBuilder(
  {
    var finalElements = new List<Base>();
    var processedPaths = new HashSet<string>();
-    AddGroupedElements(finalElements, convertedBases, groupedNodes, processedPaths);
+
+    if (!DisableGroupingForInstanceTesting)
+    {
+      AddGroupedElements(finalElements, convertedBases, groupedNodes, processedPaths);
+      logger.LogInformation(
+        "After grouping: {grouped} paths processed, {elements} elements in collection",
+        processedPaths.Count,
+        finalElements.Count
+      );
+    }
+    else
+    {
+      logger.LogInformation("Grouping disabled for instance testing");
+    }

    if (converterSettings.Current.User.PreserveModelHierarchy)
    {
+      logger.LogInformation("Building hierarchy (PreserveModelHierarchy=true)");
      var hierarchyBuilder = new NavisworksHierarchyBuilder(
        convertedBases,
        rootToSpeckleConverter,
@@ -168,7 +188,10 @@ public class NavisworksRootObjectBuilder(
      return hierarchyBuilder.BuildHierarchy();
    }

+    logger.LogInformation("Adding remaining elements (flat mode)");
    AddRemainingElements(finalElements, convertedBases, processedPaths);
+
+    logger.LogInformation("Final elements count: {count}", finalElements.Count);
    return finalElements;
  }

@@ -181,7 +204,7 @@ public class NavisworksRootObjectBuilder(
  {
    foreach (var group in groupedNodes)
    {
-      var siblingBases = new List<Base>();
+      var siblingBases = new List<Base>(group.Value.Count);
      foreach (var itemPath in group.Value.Select(elementSelectionService.GetModelItemPath))
      {
        processedPaths.Add(itemPath);
@@ -236,10 +259,29 @@ public class NavisworksRootObjectBuilder(
    string cleanParentPath = ElementSelectionHelper.GetCleanPath(groupKey);
    (string name, string path) = GetElementNameAndPath(cleanParentPath);

+    int estimatedCapacity = siblingBases.Sum(b => (b["displayValue"] as List<Base>)?.Count ?? 0);
+    var displayValues = new List<Base>(estimatedCapacity);
+    displayValues.AddRange(
+      siblingBases
+        .Where(sibling => sibling["displayValue"] is List<Base>)
+        .SelectMany(sibling => (List<Base>)sibling["displayValue"]!)
+    );
+
+    var instanceProxyCount = displayValues.Count(dv => dv.GetType().Name == "InstanceProxy");
+    if (instanceProxyCount > 0)
+    {
+      logger.LogDebug(
+        "Group {groupKey} merging {siblings} siblings with {proxies} InstanceProxy objects",
+        groupKey,
+        siblingBases.Count,
+        instanceProxyCount
+      );
+    }
+
    return new NavisworksObject
    {
      name = name,
-      displayValue = siblingBases.SelectMany(b => b["displayValue"] as List<Base> ?? []).ToList(),
+      displayValue = displayValues,
      properties = siblingBases.First()["properties"] as Dictionary<string, object?> ?? [],
      units = converterSettings.Current.Derived.SpeckleUnits,
      applicationId = groupKey,
@@ -280,25 +322,100 @@ public class NavisworksRootObjectBuilder(
    var renderMaterials = materialUnpacker.UnpackRenderMaterial(navisworksModelItems, groupedNodes);
    if (renderMaterials.Count > 0)
    {
-      rootCollection[ProxyKeys.RENDER_MATERIAL] = renderMaterials;
+      rootCollection[RENDER_MATERIAL] = renderMaterials;
    }

    var colors = colorUnpacker.UnpackColor(navisworksModelItems, groupedNodes);
    if (colors.Count > 0)
    {
-      rootCollection[ProxyKeys.COLOR] = colors;
-    }
-
-    var instanceDefinitionProxies = instanceStoreManager.GetInstanceDefinitionProxies();
-
-    if (instanceDefinitionProxies.Count > 0)
-    {
-      rootCollection[ProxyKeys.INSTANCE_DEFINITION] = instanceDefinitionProxies.ToList();
+      rootCollection[COLOR] = colors;
    }

    return Task.CompletedTask;
  }

+  private void AddInstanceDefinitionsToCollection(Collection rootCollection, ref List<Base> finalElements)
+  {
+    using var _ = activityFactory.Start("BuildInstanceDefinitions");
+
+    // Get all definition geometries from the registry
+    var allDefinitions = instanceRegistry.GetAllDefinitionGeometries();
+
+    if (allDefinitions.Count == 0)
+    {
+      logger.LogInformation("No instance definitions found - instancing may be disabled");
+      return;
+    }
+
+    logger.LogInformation("Building instance structure for {count} definition groups", allDefinitions.Count);
+
+    if (allDefinitions.Count > 100)
+    {
+      logger.LogWarning(
+        "Large number of definition groups ({count}) detected - this may indicate instance grouping is not working effectively",
+        allDefinitions.Count
+      );
+    }
+
+    var instanceDefinitionProxies = new List<InstanceDefinitionProxy>(allDefinitions.Count);
+
+    int estimatedGeometryCount = allDefinitions.Sum(kvp => kvp.Value.Count);
+    var allDefinitionGeometries = new List<Base>(estimatedGeometryCount);
+
+    foreach (var kvp in allDefinitions)
+    {
+      var groupKey = kvp.Key;
+      var geometries = kvp.Value;
+      var groupKeyPath = groupKey.ToPathString();
+
+      var defProxy = new InstanceDefinitionProxy
+      {
+        name = $"Shared Geometry {groupKeyPath}",
+        objects = geometries.Select(g => g.applicationId ?? "").Where(id => !string.IsNullOrEmpty(id)).ToList(),
+        applicationId = $"{DEFINITION_ID_PREFIX}{groupKeyPath}",
+        maxDepth = 0
+      };
+
+      instanceDefinitionProxies.Add(defProxy);
+      allDefinitionGeometries.AddRange(geometries);
+    }
+
+    rootCollection[INSTANCE_DEFINITION] = instanceDefinitionProxies;
+    var geometryDefinitionsCollection = new Collection
+    {
+      name = "Geometry Definitions",
+      elements = allDefinitionGeometries
+    };
+
+    var objectCollection = new Collection { name = "", elements = finalElements };
+
+    finalElements = [geometryDefinitionsCollection, objectCollection];
+
+    logger.LogInformation(
+      "Added {proxyCount} instance definition proxies and {geomCount} definition geometries",
+      instanceDefinitionProxies.Count,
+      allDefinitionGeometries.Count
+    );
+  }
+
+  private int CountInstanceProxiesRecursive(List<Base> elements)
+  {
+    int count = 0;
+    foreach (var element in elements)
+    {
+      if (element["displayValue"] is List<Base> displayValues)
+      {
+        count += displayValues.Count(dv => dv.GetType().Name == "InstanceProxy");
+      }
+
+      if (element is Collection { elements: not null } collection)
+      {
+        count += CountInstanceProxiesRecursive(collection.elements);
+      }
+    }
+    return count;
+  }
+
  private SendConversionResult ConvertNavisworksItem(
    NAV.ModelItem navisworksItem,
    Dictionary<string, Base?> convertedBases,
@@ -1,5 +1,4 @@
-using System.Diagnostics.CodeAnalysis;
-using Speckle.Connectors.Common.Caching;
+using Speckle.Connectors.Common.Caching;
 using Speckle.Connectors.DUI.Models.Card;
 using Speckle.Converter.Navisworks.Settings;
 using Speckle.InterfaceGenerator;
@@ -8,158 +7,106 @@ using Speckle.Sdk.Common;
 namespace Speckle.Connector.Navisworks.Operations.Send.Settings;

 [GenerateAutoInterface]
-public class ToSpeckleSettingsManagerNavisworks : IToSpeckleSettingsManagerNavisworks
+public class ToSpeckleSettingsManagerNavisworks(ISendConversionCache sendConversionCache)
+  : IToSpeckleSettingsManagerNavisworks
 {
-  private readonly ISendConversionCache _sendConversionCache;
-
-  // cache invalidation process run with ModelCardId since the settings are model specific
+  // cache invalidation process run with ModelCardId since the settings are model-specific
  private readonly Dictionary<string, RepresentationMode> _visualRepresentationCache = [];
  private readonly Dictionary<string, OriginMode> _originModeCache = [];
-  private readonly Dictionary<string, bool?> _convertHiddenElementsCache = [];
-  private readonly Dictionary<string, bool?> _includeInternalPropertiesCache = [];
-  private readonly Dictionary<string, bool?> _preserveModelHierarchyCache = [];
-  private readonly Dictionary<string, bool?> _revitCategoryMappingCache = [];
+  private readonly Dictionary<string, bool> _convertHiddenElementsCache = [];
+  private readonly Dictionary<string, bool> _includeInternalPropertiesCache = [];
+  private readonly Dictionary<string, bool> _preserveModelHierarchyCache = [];
+  private readonly Dictionary<string, bool> _revitCategoryMappingCache = [];

-  public ToSpeckleSettingsManagerNavisworks(ISendConversionCache sendConversionCache)
-  {
-    _sendConversionCache = sendConversionCache;
-  }
-
-  public RepresentationMode GetVisualRepresentationMode(SenderModelCard modelCard)
+  /// <summary>
+  /// Generic helper to get a setting value with caching and cache invalidation.
+  /// </summary>
+  private T GetCachedSetting<T>(
+    SenderModelCard modelCard,
+    string settingId,
+    Dictionary<string, T> cache,
+    Func<object?, T> valueExtractor,
+    T defaultValue
+  )
  {
    if (modelCard == null)
    {
      throw new ArgumentNullException(nameof(modelCard));
    }

-    var representationString = modelCard.Settings?.First(s => s.Id == "visualRepresentation").Value as string;
+    var settingValue = modelCard.Settings?.FirstOrDefault(s => s.Id == settingId)?.Value;
+    var returnValue = settingValue != null ? valueExtractor(settingValue) : defaultValue;

    if (
-      representationString is not null
-      && VisualRepresentationSetting.VisualRepresentationMap.TryGetValue(
-        representationString,
-        out RepresentationMode representation
-      )
+      cache.TryGetValue(modelCard.ModelCardId.NotNull(), out var previousValue)
+      && !EqualityComparer<T>.Default.Equals(previousValue, returnValue)
    )
-    {
-      if (_visualRepresentationCache.TryGetValue(modelCard.ModelCardId.NotNull(), out RepresentationMode previousType))
-      {
-        if (previousType != representation)
-        {
-          EvictCacheForModelCard(modelCard);
-        }
-      }
-
-      _visualRepresentationCache[modelCard.ModelCardId.NotNull()] = representation;
-      return representation;
-    }
-
-    throw new ArgumentException($"Invalid visual representation value: {representationString}");
-  }
-
-  public OriginMode GetOriginMode(SenderModelCard modelCard)
-  {
-    if (modelCard == null)
-    {
-      throw new ArgumentNullException(nameof(modelCard));
-    }
-
-    var originString = modelCard.Settings?.FirstOrDefault(s => s.Id == "originMode")?.Value as string;
-    if (!OriginModeSetting.OriginModeMap.TryGetValue(originString ?? string.Empty, out var origin))
-    {
-      return OriginMode.ModelOrigin; // Default to ModelOrigin if not specified or invalid
-    }
-
-    if (_originModeCache.TryGetValue(modelCard.ModelCardId.NotNull(), out var previousType) && previousType != origin)
    {
      EvictCacheForModelCard(modelCard);
    }

-    _originModeCache[modelCard.ModelCardId.NotNull()] = origin;
-    return origin;
-  }
-
-  public bool GetMappingToRevitCategories(SenderModelCard modelCard)
-  {
-    if (modelCard == null)
-    {
-      throw new ArgumentNullException(nameof(modelCard));
-    }
-
-    var value = modelCard.Settings?.FirstOrDefault(s => s.Id == "mappingToRevitCategories")?.Value as bool?;
-
-    var returnValue = value != null && value.NotNull();
-    if (_revitCategoryMappingCache.TryGetValue(modelCard.ModelCardId.NotNull(), out var previousValue))
-    {
-      if (previousValue != returnValue)
-      {
-        EvictCacheForModelCard(modelCard);
-      }
-    }
-
-    _revitCategoryMappingCache[modelCard.ModelCardId] = returnValue;
+    cache[modelCard.ModelCardId.NotNull()] = returnValue;
    return returnValue;
  }

-  public bool GetConvertHiddenElements(SenderModelCard modelCard)
-  {
-    if (modelCard == null)
-    {
-      throw new ArgumentNullException(nameof(modelCard));
-    }
-
-    var value = modelCard.Settings?.FirstOrDefault(s => s.Id == "convertHiddenElements")?.Value as bool?;
-
-    var returnValue = value != null && value.NotNull();
-    if (_convertHiddenElementsCache.TryGetValue(modelCard.ModelCardId.NotNull(), out var previousValue))
-    {
-      if (previousValue != returnValue)
+  public RepresentationMode GetVisualRepresentationMode(SenderModelCard modelCard) =>
+    GetCachedSetting(
+      modelCard,
+      "visualRepresentation",
+      _visualRepresentationCache,
+      value =>
      {
-        EvictCacheForModelCard(modelCard);
-      }
-    }
+        var representationString = value as string;
+        return
+          representationString is not null
+          && VisualRepresentationSetting.VisualRepresentationMap.TryGetValue(
+            representationString,
+            out RepresentationMode representation
+          )
+          ? representation
+          : throw new ArgumentException($"Invalid visual representation value: {representationString}");
+      },
+      RepresentationMode.Active // default value if setting not found
+    );

-    _convertHiddenElementsCache[modelCard.ModelCardId] = returnValue;
-    return returnValue;
-  }
-
-  public bool GetIncludeInternalProperties([NotNull] SenderModelCard modelCard)
-  {
-    var value = modelCard.Settings?.FirstOrDefault(s => s.Id == "includeInternalProperties")?.Value as bool?;
-
-    var returnValue = value != null && value.NotNull();
-    if (_includeInternalPropertiesCache.TryGetValue(modelCard.ModelCardId.NotNull(), out var previousValue))
-    {
-      if (previousValue != returnValue)
+  public OriginMode GetOriginMode(SenderModelCard modelCard) =>
+    GetCachedSetting(
+      modelCard,
+      "originMode",
+      _originModeCache,
+      value =>
      {
-        EvictCacheForModelCard(modelCard);
-      }
-    }
+        var originString = value as string;
+        if (OriginModeSetting.OriginModeMap.TryGetValue(originString ?? string.Empty, out var origin))
+        {
+          return origin;
+        }
+        return OriginMode.ModelOrigin;
+      },
+      OriginMode.ModelOrigin
+    );

-    _includeInternalPropertiesCache[modelCard.ModelCardId] = returnValue;
-    return returnValue;
-  }
+  public bool GetMappingToRevitCategories(SenderModelCard modelCard) =>
+    GetCachedSetting(modelCard, "mappingToRevitCategories", _revitCategoryMappingCache, value => value is true, false);

-  public bool GetPreserveModelHierarchy([NotNull] SenderModelCard modelCard)
-  {
-    var value = modelCard.Settings?.FirstOrDefault(s => s.Id == "preserveModelHierarchy")?.Value as bool?;
+  public bool GetConvertHiddenElements(SenderModelCard modelCard) =>
+    GetCachedSetting(modelCard, "convertHiddenElements", _convertHiddenElementsCache, value => value is true, false);

-    var returnValue = value != null && value.NotNull();
-    if (_preserveModelHierarchyCache.TryGetValue(modelCard.ModelCardId.NotNull(), out var previousValue))
-    {
-      if (previousValue != returnValue)
-      {
-        EvictCacheForModelCard(modelCard);
-      }
-    }
+  public bool GetIncludeInternalProperties(SenderModelCard modelCard) =>
+    GetCachedSetting(
+      modelCard,
+      "includeInternalProperties",
+      _includeInternalPropertiesCache,
+      value => value is true,
+      false
+    );

-    _preserveModelHierarchyCache[modelCard.ModelCardId] = returnValue;
-    return returnValue;
-  }
+  public bool GetPreserveModelHierarchy(SenderModelCard modelCard) =>
+    GetCachedSetting(modelCard, "preserveModelHierarchy", _preserveModelHierarchyCache, value => value is true, false);

  private void EvictCacheForModelCard(SenderModelCard modelCard)
  {
    var objectIds = modelCard.SendFilter != null ? modelCard.SendFilter.NotNull().SelectedObjectIds : [];
-    _sendConversionCache.EvictObjects(objectIds);
+    sendConversionCache.EvictObjects(objectIds);
  }
 }
@@ -14,7 +14,7 @@ public static class SpeckleV3Tool
  public const string RIBBON_STRINGS = "NavisworksRibbon.name";
  public const string PLUGIN_SUFFIX = ".Speckle";

-  public static Speckle.Sdk.Application App =>
+  public static Sdk.Application App =>
 #if NAVIS
    HostApplications.Navisworks;
 #else
@@ -24,6 +24,7 @@
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Filters\SavedItemHelpers.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\GeometryNodeMerger.cs"/>
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\NavisworksHierarchyBuilder.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\NavisworksContinuousTraversalBuilder.cs"/>
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\NavisworksRootObjectBuilder.cs"/>
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Settings\ConvertHiddenElementsSetting.cs" />
    <Compile Include="$(MSBuildThisFileDirectory)Operations\Send\Settings\IncludeInternalPropertiesSetting.cs"/>
@@ -95,8 +95,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -191,6 +191,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4"
+        }
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -276,15 +299,20 @@
          "System.Runtime.CompilerServices.Unsafe": "4.5.3"
        }
      },
+      "speckle.common.meshtriangulation": {
+        "type": "Project",
+        "dependencies": {
+          "LibTessDotNet": "[1.1.15, )",
+          "Speckle.DoubleNumerics": "[4.1.0, )"
+        }
+      },
      "speckle.connectors.common": {
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -307,16 +335,23 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.converters.revit2022": {
        "type": "Project",
        "dependencies": {
+          "Speckle.Common.MeshTriangulation": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
          "Speckle.Revit.API": "[2022.0.2.1, )"
        }
      },
+      "LibTessDotNet": {
+        "type": "CentralTransitive",
+        "requested": "[1.1.15, )",
+        "resolved": "1.1.15",
+        "contentHash": "KuA7N3Nv/lIeawJdQBQJR6oqWD9KETHLbWzBqapwFs+Tby+R5I4crkKujKMm5bXcSuFZ8LNtflFQVadsWCbBjg=="
+      },
      "Microsoft.Extensions.DependencyInjection": {
        "type": "CentralTransitive",
        "requested": "[2.2.0, )",
@@ -352,11 +387,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
      },
      "Speckle.Revit.API": {
@@ -364,29 +399,6 @@
        "requested": "[2023.0.0, )",
        "resolved": "2022.0.2.1",
        "contentHash": "IrLN4WyI2ix+g3zCpo7sX8zNB3FrtrdQ3E2RpceGVPNG00v8OfD+Kei7o1bn1u/ML46iBYRAr/JcsLbwfUQsBw=="
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    }
  }
@@ -95,8 +95,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -191,6 +191,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4"
+        }
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -276,15 +299,20 @@
          "System.Runtime.CompilerServices.Unsafe": "4.5.3"
        }
      },
+      "speckle.common.meshtriangulation": {
+        "type": "Project",
+        "dependencies": {
+          "LibTessDotNet": "[1.1.15, )",
+          "Speckle.DoubleNumerics": "[4.1.0, )"
+        }
+      },
      "speckle.connectors.common": {
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -307,16 +335,23 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.converters.revit2023": {
        "type": "Project",
        "dependencies": {
+          "Speckle.Common.MeshTriangulation": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
          "Speckle.Revit.API": "[2023.0.0, )"
        }
      },
+      "LibTessDotNet": {
+        "type": "CentralTransitive",
+        "requested": "[1.1.15, )",
+        "resolved": "1.1.15",
+        "contentHash": "KuA7N3Nv/lIeawJdQBQJR6oqWD9KETHLbWzBqapwFs+Tby+R5I4crkKujKMm5bXcSuFZ8LNtflFQVadsWCbBjg=="
+      },
      "Microsoft.Extensions.DependencyInjection": {
        "type": "CentralTransitive",
        "requested": "[2.2.0, )",
@@ -352,11 +387,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
      },
      "Speckle.Revit.API": {
@@ -364,29 +399,6 @@
        "requested": "[2023.0.0, )",
        "resolved": "2023.0.0",
        "contentHash": "tq40eD7psgTbV+epNouYyqfo6+hEi7FmXZqcxEOsAV7zfYyWhL6Rt3vmojkWGNuerGbH6oRI6KIIxrnlCNb8Hw=="
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    }
  }
@@ -95,8 +95,8 @@
      },
      "Microsoft.Bcl.AsyncInterfaces": {
        "type": "Transitive",
-        "resolved": "5.0.0",
-        "contentHash": "W8DPQjkMScOMTtJbPwmPyj9c3zYSFGawDW3jwlBOOsnY+EzZFLgNQ/UMkK35JmkNOVPdCyPr2Tw7Vv9N+KA3ZQ==",
+        "resolved": "9.0.4",
+        "contentHash": "9VGI5kxIvrNG2mqLQZnUR6y/3fcnygD8eNpHR+CqfbnIXvea6nehnYknDKQTxZVPMpzpNca+7DxLBmpdB3q0Bw==",
        "dependencies": {
          "System.Threading.Tasks.Extensions": "4.5.4"
        }
@@ -191,6 +191,29 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "dependencies": {
+          "GraphQL.Client": "6.0.0",
+          "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w==",
+        "dependencies": {
+          "Microsoft.Bcl.AsyncInterfaces": "9.0.4"
+        }
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -276,15 +299,20 @@
          "System.Runtime.CompilerServices.Unsafe": "4.5.3"
        }
      },
+      "speckle.common.meshtriangulation": {
+        "type": "Project",
+        "dependencies": {
+          "LibTessDotNet": "[1.1.15, )",
+          "Speckle.DoubleNumerics": "[4.1.0, )"
+        }
+      },
      "speckle.connectors.common": {
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -307,16 +335,23 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.converters.revit2024": {
        "type": "Project",
        "dependencies": {
+          "Speckle.Common.MeshTriangulation": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
          "Speckle.Revit.API": "[2024.0.0, )"
        }
      },
+      "LibTessDotNet": {
+        "type": "CentralTransitive",
+        "requested": "[1.1.15, )",
+        "resolved": "1.1.15",
+        "contentHash": "KuA7N3Nv/lIeawJdQBQJR6oqWD9KETHLbWzBqapwFs+Tby+R5I4crkKujKMm5bXcSuFZ8LNtflFQVadsWCbBjg=="
+      },
      "Microsoft.Extensions.DependencyInjection": {
        "type": "CentralTransitive",
        "requested": "[2.2.0, )",
@@ -352,11 +387,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
      },
      "Speckle.Revit.API": {
@@ -364,29 +399,6 @@
        "requested": "[2023.0.0, )",
        "resolved": "2024.0.0",
        "contentHash": "a4dsvZ00ocvzTgCD6dUdydf0jIZDVcDhs6dUX9cv+y3aTDbU8rmzhYXWt8sThedIG+IPSVa0vHmAH9pKiJL3SQ=="
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    }
  }
@@ -171,6 +171,25 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w=="
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -221,15 +240,20 @@
        "resolved": "4.5.1",
        "contentHash": "Zh8t8oqolRaFa9vmOZfdQm/qKejdqz0J9kr7o2Fu0vPeoH3BL1EOXipKWwkWtLT1JPzjByrF19fGuFlNbmPpiw=="
      },
+      "speckle.common.meshtriangulation": {
+        "type": "Project",
+        "dependencies": {
+          "LibTessDotNet": "[1.1.15, )",
+          "Speckle.DoubleNumerics": "[4.1.0, )"
+        }
+      },
      "speckle.connectors.common": {
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -252,16 +276,23 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.converters.revit2025": {
        "type": "Project",
        "dependencies": {
+          "Speckle.Common.MeshTriangulation": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
          "Speckle.Revit.API": "[2025.0.0, )"
        }
      },
+      "LibTessDotNet": {
+        "type": "CentralTransitive",
+        "requested": "[1.1.15, )",
+        "resolved": "1.1.15",
+        "contentHash": "KuA7N3Nv/lIeawJdQBQJR6oqWD9KETHLbWzBqapwFs+Tby+R5I4crkKujKMm5bXcSuFZ8LNtflFQVadsWCbBjg=="
+      },
      "Microsoft.Extensions.DependencyInjection": {
        "type": "CentralTransitive",
        "requested": "[2.2.0, )",
@@ -297,11 +328,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
      },
      "Speckle.Revit.API": {
@@ -309,27 +340,6 @@
        "requested": "[2023.0.0, )",
        "resolved": "2025.0.0",
        "contentHash": "Hwf/3Ydc7KxvjgD9pSZKLSJRsFTsxYg95YyTm6f43hcsGjmk49GsLFQt921Z9OcvUVewOggQHcmBgti+P2EPHw=="
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    },
    "net8.0-windows7.0/win-x64": {
@@ -3,17 +3,15 @@
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
-             xmlns:wv2="clr-namespace:Microsoft.Web.WebView2.Wpf;assembly=Microsoft.Web.WebView2.Wpf"
-             xmlns:dui="clr-namespace:Speckle.Connectors.DUI;assembly=Speckle.Connectors.DUI"
             mc:Ignorable="d"
             d:DesignHeight="450" d:DesignWidth="800">
-  <UserControl.Resources>
-    <wv2:CoreWebView2CreationProperties x:Key="EvergreenWebView2CreationProperties" UserDataFolder="C:\temp" />
-  </UserControl.Resources>
-  <DockPanel>
-    <wv2:WebView2 
-      CreationProperties="{StaticResource EvergreenWebView2CreationProperties}" 
-      HorizontalAlignment="Stretch" VerticalAlignment="Stretch" 
-      Name="Browser" Grid.Row="0" Source="{x:Static dui:Url.Netlify}" />
-  </DockPanel>
+  <!-- WebView2 is created lazily -->
+  <Border Name="BrowserContainer" Background="White">
+    <TextBlock Name="LoadingText"
+               Text="Loading Speckle..."
+               HorizontalAlignment="Center"
+               VerticalAlignment="Center"
+               FontSize="14"
+               Foreground="Gray" />
+  </Border>
 </UserControl>
@@ -2,6 +2,8 @@ using System.Windows.Controls;
 using System.Windows.Threading;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Web.WebView2.Core;
+using Microsoft.Web.WebView2.Wpf;
+using Speckle.Connectors.DUI;
 using Speckle.Connectors.DUI.Bindings;
 using Speckle.Connectors.DUI.Bridge;
 using Speckle.Connectors.Revit.Plugin;
@@ -12,6 +14,10 @@ public sealed partial class RevitControlWebView : UserControl, IBrowserScriptExe
 {
  private readonly IServiceProvider _serviceProvider;
  private readonly IRevitTask _revitTask;
+#pragma warning disable CA2213
+  private WebView2? _browser;
+#pragma warning restore CA2213
+  private bool _isInitializing;

  public RevitControlWebView(IServiceProvider serviceProvider, IRevitTask revitTask)
  {
@@ -19,36 +25,73 @@ public sealed partial class RevitControlWebView : UserControl, IBrowserScriptExe
    _revitTask = revitTask;
    InitializeComponent();

-    Browser.CoreWebView2InitializationCompleted += (sender, args) =>
+    // Delay WebView2 creation until the panel is actually visible
+    // This avoids conflicts with other plugins (like pyRevit) during startup
+    IsVisibleChanged += OnIsVisibleChanged;
+  }
+
+  private void OnIsVisibleChanged(object sender, System.Windows.DependencyPropertyChangedEventArgs e)
+  {
+    if (e.NewValue is true && _browser == null && !_isInitializing)
+    {
+      _isInitializing = true;
+      Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, CreateWebView2);
+    }
+  }
+
+  private void CreateWebView2()
+  {
+    _browser = new WebView2
+    {
+      CreationProperties = new CoreWebView2CreationProperties { UserDataFolder = "C:\\temp" },
+      HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch,
+      VerticalAlignment = System.Windows.VerticalAlignment.Stretch,
+      Source = Url.Netlify
+    };
+
+    _browser.CoreWebView2InitializationCompleted += (sender, args) =>
      _serviceProvider
        .GetRequiredService<ITopLevelExceptionHandler>()
        .CatchUnhandled(() => OnInitialized(sender, args));
+
+    BrowserContainer.Child = _browser;
  }

-  public bool IsBrowserInitialized => Browser.IsInitialized;
+  public bool IsBrowserInitialized => _browser?.IsInitialized ?? false;

-  public object BrowserElement => Browser;
+  public object BrowserElement => _browser!;

-  public void ExecuteScript(string script)
+  /// <inheritdoc/>
+  public void ExecuteScript(string script, CancellationToken cancellationToken)
  {
-    if (!Browser.IsInitialized)
+    if (_browser == null || !_browser.IsInitialized)
    {
-      throw new InvalidOperationException("Failed to execute script, Webview2 is not initialized yet.");
+      throw new InvalidOperationException("Failed to execute script, Webview2 is not initialized yet");
    }
-    _revitTask.Run(() => Browser.ExecuteScriptAsync(script));
+
+    if (!_browser.CheckAccess())
+    {
+      ExecuteScriptDispatched(script, cancellationToken);
+      return;
+    }
+
+    _browser.ExecuteScriptAsync(script);
  }

-  public void SendProgress(string script)
+  /// <inheritdoc/>
+  public void ExecuteScriptDispatched(string script, CancellationToken cancellationToken)
  {
-    if (!Browser.IsInitialized)
+    if (_browser == null || !_browser.IsInitialized)
    {
-      throw new InvalidOperationException("Failed to execute script, Webview2 is not initialized yet.");
+      throw new InvalidOperationException("Failed to execute script, Webview2 is not initialized yet");
    }
-    //always invoke even on the main thread because it's better somehow
-    Browser.Dispatcher.Invoke(
-      //fire and forget
-      () => Browser.ExecuteScriptAsync(script),
-      DispatcherPriority.Background
+
+    //Intentionally using the dispatcher even from the main thread
+    //As it allows the UI to pump messages, and stay responsive
+    _browser.Dispatcher.Invoke(
+      () => _browser.ExecuteScriptAsync(script),
+      DispatcherPriority.Background,
+      cancellationToken
    );
  }

@@ -74,11 +117,18 @@ public sealed partial class RevitControlWebView : UserControl, IBrowserScriptExe
  private void SetupBinding(IBinding binding)
  {
    binding.Parent.AssociateWithBinding(binding);
-    Browser.CoreWebView2.AddHostObjectToScript(binding.Name, binding.Parent);
+    _browser!.CoreWebView2.AddHostObjectToScript(binding.Name, binding.Parent);
  }

-  public void ShowDevTools() => Browser.CoreWebView2.OpenDevToolsWindow();
+  public void ShowDevTools() => _browser?.CoreWebView2?.OpenDevToolsWindow();

  //https://github.com/MicrosoftEdge/WebView2Feedback/issues/2161
-  public void Dispose() => Browser.Dispatcher.Invoke(() => Browser.Dispose(), DispatcherPriority.Send);
+  public void Dispose()
+  {
+    if (_browser != null)
+    {
+      _browser.Dispatcher.Invoke(() => _browser.Dispose(), DispatcherPriority.Send);
+      _browser = null;
+    }
+  }
 }
@@ -164,6 +164,25 @@
        "resolved": "13.0.2",
        "contentHash": "g1BejUZwax5PRfL6xHgLEK23sqHWOgOj9hE7RvfRRlN00AGt8GnPYt8HedSK7UB3HiRW8zCA9Pn0iiYxCK24BA=="
      },
+      "Speckle.Sdk": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "6gmPoWTv7DwqvUae57wCLF93upE9RIjaCZFue9UMY4I6FB8vLbMGfcyiUwnUY551WlGOual15ISS3G15/kMmnw==",
+        "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": "3.15.3"
+        }
+      },
+      "Speckle.Sdk.Dependencies": {
+        "type": "Transitive",
+        "resolved": "3.15.3",
+        "contentHash": "VLgyGi1kQNWe0fzRO0U3qnZZUQGDeFacnpn25Yy3esE0qeo4tqa1BrvXPv2ivEZbbhBkkg6+Gd+CztDIyw3Y/w=="
+      },
      "SQLitePCLRaw.bundle_e_sqlite3": {
        "type": "Transitive",
        "resolved": "2.1.4",
@@ -214,15 +233,20 @@
        "resolved": "4.5.1",
        "contentHash": "Zh8t8oqolRaFa9vmOZfdQm/qKejdqz0J9kr7o2Fu0vPeoH3BL1EOXipKWwkWtLT1JPzjByrF19fGuFlNbmPpiw=="
      },
+      "speckle.common.meshtriangulation": {
+        "type": "Project",
+        "dependencies": {
+          "LibTessDotNet": "[1.1.15, )",
+          "Speckle.DoubleNumerics": "[4.1.0, )"
+        }
+      },
      "speckle.connectors.common": {
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.DependencyInjection": "[2.2.0, )",
          "Speckle.Connectors.Logging": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
-          "Speckle.Objects": "[3.9.0, )",
-          "Speckle.Sdk": "[3.9.0, )",
-          "Speckle.Sdk.Dependencies": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.connectors.dui": {
@@ -245,16 +269,23 @@
        "type": "Project",
        "dependencies": {
          "Microsoft.Extensions.Logging.Abstractions": "[2.2.0, )",
-          "Speckle.Objects": "[3.9.0, )"
+          "Speckle.Objects": "[3.15.3, )"
        }
      },
      "speckle.converters.revit2026": {
        "type": "Project",
        "dependencies": {
+          "Speckle.Common.MeshTriangulation": "[1.0.0, )",
          "Speckle.Converters.Common": "[1.0.0, )",
          "Speckle.Revit.API": "[2026.0.0, )"
        }
      },
+      "LibTessDotNet": {
+        "type": "CentralTransitive",
+        "requested": "[1.1.15, )",
+        "resolved": "1.1.15",
+        "contentHash": "KuA7N3Nv/lIeawJdQBQJR6oqWD9KETHLbWzBqapwFs+Tby+R5I4crkKujKMm5bXcSuFZ8LNtflFQVadsWCbBjg=="
+      },
      "Microsoft.Extensions.Logging": {
        "type": "CentralTransitive",
        "requested": "[2.2.0, )",
@@ -281,11 +312,11 @@
      },
      "Speckle.Objects": {
        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "fAOUhScCfDFVVynvipczjyw9RZlOgPOo8aH5A7EDAwZiDuDdd4EsnrqBCSPlmuoPYzY7hsN+5mfRkfw2rB36Ig==",
+        "requested": "[3.15.3, )",
+        "resolved": "3.15.3",
+        "contentHash": "zmHnLKR46in0xH5ashD+ENlYUPDktUMZhXYYOb8aWHAG3Zxai2WvmDJtdf7pV9GTafkpR6fCo2EQTeCoY+XXxQ==",
        "dependencies": {
-          "Speckle.Sdk": "3.9.0"
+          "Speckle.Sdk": "3.15.3"
        }
      },
      "Speckle.Revit.API": {
@@ -293,27 +324,6 @@
        "requested": "[2023.0.0, )",
        "resolved": "2026.0.0",
        "contentHash": "SiqqKbF1pXyZWXZhAl2JhjYhTt7RiYO5JaQrAjq+OlleAjT4zatwAp/DnTwQspFbP7UZr3b2Ed2kuWNN0ZFelw=="
-      },
-      "Speckle.Sdk": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "GtbvnySinrE6Canm6fVjyUOxs4G1bw0aRLs9oPVMdodOKc9TxIQjp1lzVBtr6Jli+nzIxtC86xP5J6r9tufnrQ==",
-        "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": "3.9.0"
-        }
-      },
-      "Speckle.Sdk.Dependencies": {
-        "type": "CentralTransitive",
-        "requested": "[3.9.0, )",
-        "resolved": "3.9.0",
-        "contentHash": "m/3i+DX/1McN8ig0CcjmHM1BcNmNxgmny/735sKntzzDw23wdo868eOOTrogzmDoYHTyc7J4IjK+GE7iAyWn/g=="
      }
    },
    "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;
@@ -14,35 +13,49 @@ public partial class CefSharpPanel : Page, Autodesk.Revit.UI.IDockablePaneProvid
    InitializeComponent();
  }

-  public void ExecuteScript(string script)
+  /// <inheritdoc/>
+  public void ExecuteScript(string script, CancellationToken cancellationToken)
  {
-    try
+    if (!Browser.CheckAccess())
    {
-      Browser.Dispatcher.Invoke(
-        () =>
-        {
-          //avoid exceptions by checking if IBrowser is there
-          if (!Browser.IsBrowserInitialized || Browser.GetBrowser() is null)
-          {
-            return;
-          }
+      ExecuteScriptDispatched(script, cancellationToken);
+      return;
+    }

-          Browser.ExecuteScriptAsync(script);
-        },
-        DispatcherPriority.Background
-      );
-    }
-    catch (SEHException)
+    //avoid exceptions by checking if IBrowser is there
+    if (!Browser.IsBrowserInitialized || Browser.GetBrowser() is null)
    {
-      //do nothing as we can't control external components
-    }
-    catch (OperationCanceledException)
-    {
-      //do nothing, happens when closing Revit while a script is being executed
+      return;
    }
+
+    Browser.ExecuteScriptAsync(script);
  }

-  public void SendProgress(string script) => ExecuteScript(script);
+  /// <inheritdoc/>
+  public void ExecuteScriptDispatched(string script, CancellationToken cancellationToken)
+  {
+    if (Browser == null || !Browser.IsInitialized)
+    {
+      throw new InvalidOperationException("Failed to execute script, ChromiumWebBrowser is not initialized yet");
+    }
+
+    //Intentionally using the dispatcher even from the main thread
+    //As it allows the UI to pump messages, and stay responsive
+    Browser.Dispatcher.Invoke(
+      () =>
+      {
+        //avoid exceptions by checking if IBrowser is there
+        if (!Browser.IsBrowserInitialized || Browser.GetBrowser() is null)
+        {
+          return;
+        }
+
+        Browser.ExecuteScriptAsync(script);
+      },
+      DispatcherPriority.Background,
+      cancellationToken
+    );
+  }

  public bool IsBrowserInitialized => Browser.IsBrowserInitialized;
  public object BrowserElement => Browser;
@@ -2,6 +2,8 @@ using Autodesk.Revit.DB;
 using Speckle.Connectors.DUI.Bridge;
 using Speckle.Connectors.DUI.Models;
 using Speckle.Connectors.DUI.Models.Card;
+using Speckle.Connectors.DUI.Utils;
+using Speckle.Connectors.Revit.HostApp;
 using Speckle.Connectors.Revit.Plugin;
 using Speckle.Connectors.RevitShared;
 using Speckle.Connectors.RevitShared.Operations.Send.Filters;
@@ -24,6 +26,8 @@ internal sealed class BasicConnectorBindingRevit : IBasicConnectorBinding
  private readonly ISpeckleApplication _speckleApplication;
  private readonly ITopLevelExceptionHandler _topLevelExceptionHandler;
  private readonly IRevitTask _revitTask;
+  private readonly ParameterUpdater _parameterUpdater;
+  private readonly IJsonSerializer _jsonSerializer;

  public BasicConnectorBindingRevit(
    DocumentModelStore store,
@@ -31,7 +35,9 @@ internal sealed class BasicConnectorBindingRevit : IBasicConnectorBinding
    RevitContext revitContext,
    ISpeckleApplication speckleApplication,
    ITopLevelExceptionHandler topLevelExceptionHandler,
-    IRevitTask revitTask
+    IRevitTask revitTask,
+    ParameterUpdater parameterUpdater,
+    IJsonSerializer jsonSerializer
  )
  {
    Name = "baseBinding";
@@ -41,6 +47,8 @@ internal sealed class BasicConnectorBindingRevit : IBasicConnectorBinding
    _speckleApplication = speckleApplication;
    _topLevelExceptionHandler = topLevelExceptionHandler;
    _revitTask = revitTask;
+    _parameterUpdater = parameterUpdater;
+    _jsonSerializer = jsonSerializer;
    Commands = new BasicConnectorBindingCommands(parent);

    _store.DocumentChanged += (_, _) =>
@@ -73,7 +81,12 @@ internal sealed class BasicConnectorBindingRevit : IBasicConnectorBinding
    }

    //should this use the Hashcode of the document instead of something like CreationGUID?
-    var info = new DocumentInfo(doc.PathName, doc.Title, doc.GetHashCode().ToString());
+    var info = new DocumentInfo(
+      doc.PathName,
+      doc.Title,
+      doc.GetHashCode().ToString(),
+      doc.IsModelInCloud ? doc.GetCloudModelUrn() : null
+    );

    return info;
  }
@@ -0,0 +1,251 @@
+using Autodesk.Revit.DB;
+using Microsoft.Extensions.Logging;
+using Speckle.Connectors.DUI.Bindings;
+using Speckle.Connectors.DUI.Bridge;
+using Speckle.Connectors.DUI.Utils;
+using Speckle.Connectors.Revit.HostApp;
+using Speckle.Connectors.Revit.Operations.Receive;
+using Speckle.Connectors.Revit.Plugin;
+using Speckle.Connectors.RevitShared;
+using Speckle.Converters.RevitShared.Helpers;
+using Speckle.Sdk;
+
+namespace Speckle.Connectors.Revit.Bindings;
+
+public static class ParameterScopes
+{
+  public const string INSTANCE = "Instance Parameters";
+  public const string TYPE = "Type Parameters";
+  public const string SYSTEM_TYPE = "System Type Parameters";
+}
+
+public record ParsedParameterPath(string Scope, string Category, string Name)
+{
+  public string[] ToArray() => [Scope, Category, Name];
+}
+
+internal sealed class RevitParametersBinding : IParametersBinding
+{
+  public string Name => "parametersBinding";
+  public IBrowserBridge Parent { get; }
+
+  private readonly RevitContext _revitContext;
+  private readonly ITopLevelExceptionHandler _topLevelExceptionHandler;
+  private readonly IRevitTask _revitTask;
+  private readonly ParameterUpdater _parameterUpdater;
+  private readonly IJsonSerializer _jsonSerializer;
+  private readonly IBasicConnectorBinding _baseBinding;
+  private readonly ILogger<RevitParametersBinding> _logger;
+
+  public RevitParametersBinding(
+    IBrowserBridge parent,
+    RevitContext revitContext,
+    ITopLevelExceptionHandler topLevelExceptionHandler,
+    IRevitTask revitTask,
+    ParameterUpdater parameterUpdater,
+    IJsonSerializer jsonSerializer,
+    IBasicConnectorBinding baseBinding,
+    ILogger<RevitParametersBinding> logger
+  )
+  {
+    Parent = parent;
+    _revitContext = revitContext;
+    _topLevelExceptionHandler = topLevelExceptionHandler;
+    _revitTask = revitTask;
+    _parameterUpdater = parameterUpdater;
+    _jsonSerializer = jsonSerializer;
+    _baseBinding = baseBinding;
+    _logger = logger;
+  }
+
+  public async Task Update(string payload)
+  {
+    try
+    {
+      var wrapper = _jsonSerializer.Deserialize<ParameterChangesWrapper>(payload);
+      var requests = wrapper?.Changes;
+
+      if (requests == null || requests.Count == 0)
+      {
+        return;
+      }
+
+      var activeUIDoc =
+        _revitContext.UIApplication?.ActiveUIDocument
+        ?? throw new SpeckleException("Unable to retrieve active UI document");
+      var doc = activeUIDoc.Document;
+
+      int successCount = 0;
+      List<string> errors = [];
+
+      await _revitTask
+        .RunAsync(() =>
+        {
+          using var t = new Transaction(doc, "Speckle: Apply Parameter Changes");
+
+          // silence pop-ups like "duplicate mark values" etc. which blocks our param updates
+          var failureOptions = t.GetFailureHandlingOptions();
+          failureOptions.SetFailuresPreprocessor(new HideWarningsFailuresPreprocessor());
+          t.SetFailureHandlingOptions(failureOptions);
+
+          t.Start();
+
+          foreach (var request in requests)
+          {
+            if (!TryValidateAndParseRequest(doc, request, out var element, out var parsedPath, out var errorMessage))
+            {
+              errors.Add(errorMessage!);
+              continue;
+            }
+
+            object? rawValue = request.To;
+            if (rawValue is Newtonsoft.Json.Linq.JValue jValue)
+            {
+              rawValue = jValue.Value;
+            }
+
+            var result = _parameterUpdater.Update(
+              element!,
+              parsedPath!.ToArray(),
+              rawValue,
+              request.InternalDefinitionName
+            );
+
+            if (result.IsSuccess)
+            {
+              successCount++;
+            }
+            else
+            {
+              errors.Add(result.ErrorMessage ?? "Unknown error");
+            }
+          }
+
+          t.Commit();
+        })
+        .ConfigureAwait(false);
+
+      if (errors.Count > 0)
+      {
+        var groupedErrors = errors.GroupBy(e => e).Select(g => $"{g.Count()} x {g.Key}");
+        var errorString = string.Join(", ", groupedErrors);
+
+        if (successCount > 0)
+        {
+          // Partial Success (Some worked, some failed)
+          await _baseBinding.Commands.SetGlobalNotification(
+            ToastNotificationType.WARNING,
+            "Parameters updated with errors",
+            $"Applied {successCount} updates. Encountered {errors.Count} errors: {errorString}",
+            autoClose: false
+          );
+        }
+        else
+        {
+          // Total Failure (None worked)
+          await _baseBinding.Commands.SetGlobalNotification(
+            ToastNotificationType.DANGER,
+            "No parameters updated",
+            $"All {errors.Count} updates failed: {errorString}",
+            autoClose: false
+          );
+        }
+      }
+      else if (successCount > 0)
+      {
+        // Total Success
+        await _baseBinding.Commands.SetGlobalNotification(
+          ToastNotificationType.SUCCESS,
+          "All parameters updated",
+          $"Successfully applied {successCount} updates."
+        );
+      }
+    }
+    catch (Exception ex)
+    {
+      _topLevelExceptionHandler.CatchUnhandled(
+        () => throw new SpeckleException("Failed to apply parameter updates", ex)
+      );
+    }
+  }
+
+  private bool TryValidateAndParseRequest(
+    Document doc,
+    ParameterChangeRequest request,
+    out Element? element,
+    out ParsedParameterPath? parsedPath,
+    out string? errorMessage
+  )
+  {
+    element = null;
+    parsedPath = null;
+    errorMessage = null;
+
+    if (string.IsNullOrEmpty(request.ApplicationId))
+    {
+      errorMessage = "Missing ApplicationId";
+      return false;
+    }
+
+    if (ContainsLinkedModelTransformHash(request.ApplicationId))
+    {
+      errorMessage = "Cannot modify elements from a linked model";
+      return false;
+    }
+
+    var elementId = ElementIdHelper.GetElementIdFromUniqueId(doc, request.ApplicationId);
+    if (elementId == null)
+    {
+      errorMessage = "Element(s) not found in document";
+      return false;
+    }
+
+    element = doc.GetElement(elementId);
+    if (element == null)
+    {
+      errorMessage = "Element(s) not found in document";
+      return false;
+    }
+
+    var rawPath = request.Path;
+    if (string.IsNullOrEmpty(rawPath))
+    {
+      _logger.LogError("Widget / DUI payload error: parameter path missing");
+      errorMessage = "Parameter path is missing";
+      return false;
+    }
+
+    if (rawPath.StartsWith("properties.", StringComparison.InvariantCultureIgnoreCase))
+    {
+      rawPath = rawPath[11..];
+    }
+
+    if (rawPath.StartsWith("parameters.", StringComparison.InvariantCultureIgnoreCase))
+    {
+      rawPath = rawPath[11..];
+    }
+
+    var pathParts = rawPath.Split(['.'], 3);
+    if (pathParts.Length != 3)
+    {
+      _logger.LogError(
+        "Path format error: Expected exactly 3 parts (Scope.Category.Name) but received '{RawPath}' for element",
+        rawPath
+      );
+      errorMessage = "Parameter path is incorrectly formatted";
+      return false;
+    }
+
+    parsedPath = new ParsedParameterPath(pathParts[0], pathParts[1], pathParts[2]);
+    return true;
+  }
+
+  private static bool ContainsLinkedModelTransformHash(string applicationId) =>
+    // Evaluates if the ID contains the standard transform hash for linked elements
+    System.Text.RegularExpressions.Regex.IsMatch(applicationId, @"_t[a-f0-9]+$");
+}
+
+public class ParameterChangesWrapper
+{
+  public List<ParameterChangeRequest>? Changes { get; set; }
+}
@@ -4,6 +4,7 @@ using Speckle.Connectors.Common.Cancellation;
 using Speckle.Connectors.DUI.Bindings;
 using Speckle.Connectors.DUI.Bridge;
 using Speckle.Connectors.DUI.Settings;
+using Speckle.Connectors.Revit.Operations.Receive;
 using Speckle.Connectors.Revit.Plugin;
 using Speckle.Converters.Common;
 using Speckle.Converters.RevitShared.Settings;
@@ -24,7 +25,8 @@ public sealed class RevitReceiveBinding(
  private IReceiveBindingUICommands Commands { get; } = new ReceiveBindingUICommands(parent);

 #pragma warning disable CA1024
-  public List<ICardSetting> GetReceiveSettings() => [new Operations.Receive.Settings.ReceiveReferencePointSetting()];
+  public List<ICardSetting> GetReceiveSettings() =>
+    [new Operations.Receive.Settings.ReceiveReferencePointSetting(), new ReceiveInstancesAsFamiliesSetting()];
 #pragma warning restore CA1024

  public void CancelReceive(string modelCardId) => cancellationManager.CancelOperation(modelCardId);
@@ -44,7 +46,9 @@ public sealed class RevitReceiveBinding(
              toHostSettingsManager.GetReferencePointSetting(card),
              false,
              true,
-              false
+              false,
+              false,
+              toHostSettingsManager.GetReceiveInstancesAsFamiliesSetting(card)
            )
          );
      },
@@ -1,3 +1,4 @@
+using System.IO;
 using Autodesk.Revit.DB;
 using Autodesk.Revit.DB.ExtensibleStorage;
 using Microsoft.Extensions.DependencyInjection;
@@ -24,7 +25,7 @@ namespace Speckle.Connectors.Revit.Bindings;

 internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
 {
-  private readonly IAppIdleManager _idleManager;
+  private readonly RevitIdleManager _revitIdleManager;
  private readonly RevitContext _revitContext;
  private readonly DocumentModelStore _store;
  private readonly ICancellationManager _cancellationManager;
@@ -38,6 +39,10 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
  private readonly LinkedModelHandler _linkedModelHandler;
  private readonly IThreadContext _threadContext;
  private readonly ISendOperationManagerFactory _sendOperationManagerFactory;
+  private readonly ParameterUpdater _parameterUpdater;
+  private bool _isDocChangedSubscribed;
+  private EventHandler<Autodesk.Revit.DB.Events.DocumentChangedEventArgs>? _documentChangedHandler;
+  private readonly ConnectorConfig _config;

  /// <summary>
  /// Used internally to aggregate the changed objects' id. Note we're using a concurrent dictionary here as the expiry check method is not thread safe, and this was causing problems. See:
@@ -48,7 +53,7 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
  private ConcurrentHashSet<ElementId> ChangedObjectIds { get; set; } = new();

  public RevitSendBinding(
-    IAppIdleManager idleManager,
+    RevitIdleManager revitIdleManager,
    RevitContext revitContext,
    DocumentModelStore store,
    ICancellationManager cancellationManager,
@@ -62,11 +67,13 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
    LinkedModelHandler linkedModelHandler,
    IThreadContext threadContext,
    IRevitTask revitTask,
-    ISendOperationManagerFactory sendOperationManagerFactory
+    ISendOperationManagerFactory sendOperationManagerFactory,
+    ParameterUpdater parameterUpdater,
+    IConfigStore configStore
  )
    : base("sendBinding", bridge)
  {
-    _idleManager = idleManager;
+    _revitIdleManager = revitIdleManager;
    _revitContext = revitContext;
    _store = store;
    _cancellationManager = cancellationManager;
@@ -79,6 +86,8 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
    _linkedModelHandler = linkedModelHandler;
    _threadContext = threadContext;
    _sendOperationManagerFactory = sendOperationManagerFactory;
+    _parameterUpdater = parameterUpdater;
+    _config = configStore.GetConnectorConfig();

    Commands = new SendBindingUICommands(bridge);
    // TODO expiry events
@@ -86,12 +95,58 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding

    revitTask.Run(() =>
    {
-      revitContext.UIApplication.NotNull().Application.DocumentChanged += (_, e) =>
-        _topLevelExceptionHandler.CatchUnhandled(() => DocChangeHandler(e));
+      // revitContext.UIApplication.NotNull().Application.DocumentChanged += (_, e) =>
+      //   _topLevelExceptionHandler.CatchUnhandled(() => DocChangeHandler(e));
+      _documentChangedHandler = (_, e) => _topLevelExceptionHandler.CatchUnhandled(() => DocChangeHandler(e));
+      _store.ModelCardsChanged += (_, e) => OnModelCardsChanged(e);
      _store.DocumentChanged += (_, _) => topLevelExceptionHandler.FireAndForget(async () => await OnDocumentChanged());
    });
  }

+  private void OnModelCardsChanged(ModelCardsChangedEventArgs e)
+  {
+    if (
+      !_config.DocumentChangeListeningDisabled
+      && e.ModelCards.Count > 0
+      && e.ModelCards.Any(m => m.TypeDiscriminator == nameof(SenderModelCard))
+    )
+    {
+      SubscribeDocChanged();
+    }
+    else
+    {
+      UnsubscribeDocChanged();
+    }
+  }
+
+  private void SubscribeDocChanged()
+  {
+    if (_documentChangedHandler == null || _isDocChangedSubscribed)
+    {
+      return;
+    }
+
+    _threadContext.RunOnMain(() =>
+    {
+      _revitContext.UIApplication.NotNull().Application.DocumentChanged += _documentChangedHandler;
+    });
+    _isDocChangedSubscribed = true;
+  }
+
+  private void UnsubscribeDocChanged()
+  {
+    if (_documentChangedHandler == null || !_isDocChangedSubscribed)
+    {
+      return;
+    }
+
+    _threadContext.RunOnMain(() =>
+    {
+      _revitContext.UIApplication.NotNull().Application.DocumentChanged -= _documentChangedHandler;
+    });
+    _isDocChangedSubscribed = false;
+  }
+
  public List<ISendFilter> GetSendFilters() =>
    [
      new RevitSelectionFilter { IsDefault = true },
@@ -105,7 +160,8 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
      new SendReferencePointSetting(),
      new SendParameterNullOrEmptyStringsSetting(),
      new LinkedModelsSetting(),
-      new SendRebarsAsVolumetricSetting()
+      new SendRebarsAsVolumetricSetting(),
+      new SendAreasAsMeshSetting()
    ];

  public void CancelSend(string modelCardId) => _cancellationManager.CancelOperation(modelCardId);
@@ -120,7 +176,7 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
      throw new SpeckleException("No document is active for sending.");
    }
    using var manager = _sendOperationManagerFactory.Create();
-
+    var (fileName, fileBytes) = GetFileInfo(document);
    await manager.Process<DocumentToConvert>(
      Commands,
      modelCardId,
@@ -133,14 +189,70 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
              _toSpeckleSettingsManager.GetReferencePointSetting(document, card),
              _toSpeckleSettingsManager.GetSendParameterNullOrEmptyStringsSetting(document, card),
              _toSpeckleSettingsManager.GetLinkedModelsSetting(document, card),
+              _toSpeckleSettingsManager.GetSendRebarsAsVolumetric(document, card),
+              _toSpeckleSettingsManager.GetSendAreasAsMesh(document, card),
              _toSpeckleSettingsManager.GetSendRebarsAsVolumetric(document, card)
            )
          );
      },
-      async x => await RefreshElementsIdsOnSender(document, x.NotNull())
+      async x => await RefreshElementsIdsOnSender(document, x.NotNull()),
+      fileName: fileName,
+      fileSizeBytes: fileBytes
    );
  }

+  public async Task UpdateParameters(List<ParameterChangeRequest> changes)
+  {
+    var document = _revitContext.UIApplication?.ActiveUIDocument?.Document;
+    if (document == null)
+    {
+      throw new SpeckleException("No document is active.");
+    }
+
+    await _threadContext.RunOnMainAsync(() =>
+    {
+      using var transaction = new Transaction(document, "Speckle Parameter Updates");
+      transaction.Start();
+
+      foreach (var change in changes)
+      {
+        var element = document.GetElement(change.ApplicationId);
+        if (element == null)
+        {
+          continue;
+        }
+
+        var path = ParsePath(change.Path);
+        var result = _parameterUpdater.Update(element, path, change.To);
+      }
+
+      transaction.Commit();
+      return Task.FromResult(true);
+    });
+  }
+
+  private string[] ParsePath(string concatenatedPath)
+  {
+    // "properties.Parameters.Type Parameters.Other.Family Name"
+    //  → ["Type Parameters", "Other", "Family Name"]
+    var segments = concatenatedPath.Split('.');
+    return segments.Skip(2).ToArray();
+  }
+
+  private static (string? fileName, long? fileBytes) GetFileInfo(Document document)
+  {
+    string fullPath = document.PathName;
+    if (File.Exists(document.PathName))
+    {
+      var fileInfo = new FileInfo(document.PathName);
+      return (fileInfo.Name, fileInfo.Length);
+    }
+    else
+    {
+      return (fullPath.Split('/').LastOrDefault(), null);
+    }
+  }
+
  private async Task<List<DocumentToConvert>> RefreshElementsIdsOnSender(Document document, SenderModelCard modelCard)
  {
    if (modelCard.SendFilter.NotNull() is IRevitSendFilter viewFilter)
@@ -276,7 +388,7 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding

    if (addedElementIds.Count > 0)
    {
-      _idleManager.SubscribeToIdle(nameof(PostSetObjectIds), PostSetObjectIds);
+      _revitIdleManager.SubscribeToIdle(nameof(PostSetObjectIds), PostSetObjectIds);
    }

    if (HaveUnitsChanged(doc))
@@ -296,8 +408,8 @@ internal sealed class RevitSendBinding : RevitBaseBinding, ISendBinding
      _sendConversionCache.EvictObjects(unpackedObjectIds);
    }

-    _idleManager.SubscribeToIdle(nameof(CheckFilterExpiration), CheckFilterExpiration);
-    _idleManager.SubscribeToIdle(nameof(RunExpirationChecks), RunExpirationChecks);
+    _revitIdleManager.SubscribeToIdle(nameof(CheckFilterExpiration), CheckFilterExpiration);
+    _revitIdleManager.SubscribeToIdle(nameof(RunExpirationChecks), RunExpirationChecks);
  }

  // Keeps track of doc and current units
@@ -1,5 +1,6 @@
 using Speckle.Connectors.DUI.Bindings;
 using Speckle.Connectors.DUI.Bridge;
+using Speckle.Connectors.DUI.Settings;
 using Speckle.Connectors.Revit.Plugin;
 using Speckle.Converters.RevitShared.Helpers;
 using Speckle.Sdk.Common;
@@ -17,27 +18,32 @@ internal sealed class SelectionBinding : RevitBaseBinding, ISelectionBinding, ID
  public SelectionBinding(
    RevitContext revitContext,
    IBrowserBridge parent,
-    IAppIdleManager idleManager,
+    RevitIdleManager idleManager,
+#if REVIT2022
    ITopLevelExceptionHandler topLevelExceptionHandler,
-    IRevitTask revitTask
+#endif
+    IRevitTask revitTask,
+    IConfigStore configStore
  )
    : base("selectionBinding", parent)
  {
    _revitContext = revitContext;

+    if (!configStore.GetConnectorConfig().SelectionChangeListeningDisabled)
+    {
 #if REVIT2022
-    // NOTE: getting the selection data should be a fast function all, even for '000s of elements - and having a timer hitting it every 1s is ok.
-    _selectionTimer = new System.Timers.Timer(1000);
-    _selectionTimer.Elapsed += (_, _) => topLevelExceptionHandler.CatchUnhandled(OnSelectionChanged);
-    _selectionTimer.Start();
+      // NOTE: getting the selection data should be a fast function all, even for '000s of elements - and having a timer hitting it every 1s is ok.
+      _selectionTimer = new System.Timers.Timer(1000);
+      _selectionTimer.Elapsed += (_, _) => topLevelExceptionHandler.CatchUnhandled(OnSelectionChanged);
+      _selectionTimer.Start();
 #else
-
-    revitTask.Run(
-      () =>
-        _revitContext.UIApplication.NotNull().SelectionChanged += (_, _) =>
-          idleManager.SubscribeToIdle(nameof(OnSelectionChanged), OnSelectionChanged)
-    );
+      revitTask.Run(
+        () =>
+          _revitContext.UIApplication.NotNull().SelectionChanged += (_, _) =>
+            idleManager.SubscribeToIdle(nameof(OnSelectionChanged), OnSelectionChanged)
+      );
 #endif
+    }
  }

  private void OnSelectionChanged()
@@ -48,11 +48,15 @@ public static class ServiceRegistration
    serviceCollection.AddSingleton<IBinding, SelectionBinding>();
    serviceCollection.AddSingleton<IBinding, RevitSendBinding>();
    serviceCollection.AddSingleton<IBinding, RevitReceiveBinding>();
+    serviceCollection.AddSingleton<RevitIdleManager>();

    serviceCollection.AddSingleton<IBinding>(sp => sp.GetRequiredService<IBasicConnectorBinding>());
    serviceCollection.AddSingleton<IBasicConnectorBinding, BasicConnectorBindingRevit>();

-    serviceCollection.AddSingleton<IAppIdleManager, RevitIdleManager>();
+    serviceCollection.AddSingleton<IBinding>(sp => sp.GetRequiredService<IParametersBinding>());
+    serviceCollection.AddSingleton<IParametersBinding, RevitParametersBinding>();
+
+    // serviceCollection.AddSingleton<IAppIdleManager, RevitIdleManager>();

    // send operation and dependencies
    serviceCollection.AddScoped<SendOperation<DocumentToConvert>>();
@@ -61,18 +65,28 @@ public static class ServiceRegistration
    serviceCollection.AddScoped<ViewUnpacker>();
    serviceCollection.AddScoped<SendCollectionManager>();
    serviceCollection.AddScoped<IRootObjectBuilder<DocumentToConvert>, RevitRootObjectBuilder>();
+    serviceCollection.AddScoped<IRootContinuousTraversalBuilder<DocumentToConvert>, RevitContinuousTraversalBuilder>();
    serviceCollection.AddSingleton<ISendConversionCache, SendConversionCache>();
    serviceCollection.AddSingleton<ToSpeckleSettingsManager>();
    serviceCollection.AddSingleton<ToHostSettingsManager>();
    serviceCollection.AddSingleton<LinkedModelHandler>();
+    serviceCollection.AddSingleton<ParameterUpdater>();

    // receive operation and dependencies
    serviceCollection.AddScoped<IHostObjectBuilder, RevitHostObjectBuilder>();
    serviceCollection.AddScoped<ITransactionManager, TransactionManager>();
+    serviceCollection.AddScoped<RevitFamilyBaker>();
+    serviceCollection.AddScoped<FamilyGeometryBaker>();
    serviceCollection.AddScoped<RevitGroupBaker>();
    serviceCollection.AddScoped<RevitMaterialBaker>();
+    serviceCollection.AddScoped<RevitViewBaker>();
    serviceCollection.AddScoped<RevitViewManager>();
+    serviceCollection.AddScoped<DirectShapeUnpackStrategy>();
+    serviceCollection.AddScoped<FamilyUnpackStrategy>();
+    serviceCollection.AddScoped<RevitPreBakeSetupService>();
    serviceCollection.AddSingleton<RevitUtils>();
+    serviceCollection.AddSingleton<FamilyCategoryUtils>();
+    serviceCollection.AddSingleton<FamilyTransformUtils>();
    serviceCollection.AddSingleton<IFailuresPreprocessor, HideWarningsFailuresPreprocessor>();
    serviceCollection.AddSingleton(DefaultTraversal.CreateTraversalFunc());
    serviceCollection.AddScoped<LocalToGlobalConverterUtils>();
@@ -9,8 +9,19 @@ namespace Speckle.Connectors.Revit.HostApp;
 /// </summary>
 public class ElementUnpacker
 {
+  private static readonly List<BuiltInCategory> s_skippedCategories =
+  [
+    BuiltInCategory.OST_SketchLines,
+    BuiltInCategory.OST_MassForm,
+    BuiltInCategory.OST_StairsSketchBoundaryLines,
+    BuiltInCategory.OST_StairsSketchLandingCenterLines,
+    BuiltInCategory.OST_StairsSketchRiserLines,
+    BuiltInCategory.OST_RebarSketchLines,
+    BuiltInCategory.OST_StairsSketchRunLines
+  ];
+
  /// <summary>
-  /// Unpacks a random set of revit objects into atomic objects. It currently unpacks groups recurisvely, nested families into atomic family instances.
+  /// Unpacks a random set of revit objects into atomic objects. It currently unpacks groups recursively, nested families into atomic family instances.
  /// This method will also "pack" curtain walls if necessary (ie, if mullions or panels are selected without their parent curtain wall, they are sent independently; if the parent curtain wall is selected, they will be removed out as the curtain wall will include all its children).
  /// </summary>
  /// <param name="selectionElements"></param>
@@ -32,7 +43,7 @@ public class ElementUnpacker
  }

  /// <summary>
-  /// Unpacks input element ids into their subelements, eg groups and nested family instances
+  /// Unpacks input element ids into their sub-elements, eg groups and nested family instances
  /// </summary>
  /// <param name="objectIds"></param>
  /// <returns></returns>
@@ -57,11 +68,21 @@ public class ElementUnpacker
      // UNPACK: Groups
      if (element is Group g)
      {
-        // When a group is from a linked model, GetMemberIds may behave differently
-        // We add null checks to handle cases where elements can't be properly resolved
-        // POC: this might screw up generating hosting rel generation here, because nested families in groups get flattened out by GetMemberIds().
-        var groupElements = g.GetMemberIds().Select(doc.GetElement).Where(el => el != null);
-        unpackedElements.AddRange(UnpackElements(groupElements, doc));
+        var memberIds = g.GetMemberIds();
+
+        if (memberIds.Count <= 0)
+        {
+          continue;
+        }
+
+        // using a collector more efficient
+        using var collector = new FilteredElementCollector(doc, memberIds);
+        collector.WhereElementIsNotElementType(); // exclude "Type" elements (FamilySymbols)
+        var filter = new ElementMulticategoryFilter(s_skippedCategories, inverted: true); // exclude "Sketch/Form" categories
+        collector.WherePasses(filter);
+
+        // recursively unpack the valid results
+        unpackedElements.AddRange(UnpackElements(collector, doc));
      }
      else if (element is BaseArray baseArray)
      {
@@ -0,0 +1,77 @@
+using Autodesk.Revit.DB;
+using Microsoft.Extensions.Logging;
+using Speckle.Converters.RevitShared.Helpers;
+using Speckle.Objects.Data;
+using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Models.GraphTraversal;
+using Speckle.Sdk.Models.Instances;
+
+namespace Speckle.Connectors.Revit.HostApp;
+
+public class FamilyCategoryUtils
+{
+  private readonly CategoryExtractor _categoryExtractor;
+  private readonly ILogger<FamilyCategoryUtils> _logger;
+
+  public FamilyCategoryUtils(CategoryExtractor categoryExtractor, ILogger<FamilyCategoryUtils> logger)
+  {
+    _categoryExtractor = categoryExtractor;
+    _logger = logger;
+  }
+
+  public string? ExtractCategoryForDefinition(
+    InstanceDefinitionProxy definition,
+    ICollection<(Collection[] collectionPath, IInstanceComponent component)> instanceComponents,
+    IReadOnlyDictionary<string, TraversalContext> speckleObjectLookup
+  )
+  {
+    var definitionId = definition.applicationId ?? definition.id;
+
+    var firstInstance = instanceComponents
+      .Select(x => x.component)
+      .OfType<InstanceProxy>()
+      .FirstOrDefault(i => i.definitionId == definitionId);
+
+    if (firstInstance == null)
+    {
+      return null;
+    }
+
+    var instanceObjectId = firstInstance.applicationId ?? firstInstance.id;
+    if (instanceObjectId != null && speckleObjectLookup.TryGetValue(instanceObjectId, out var tc))
+    {
+      var parentDataObject = tc.Parent?.Current as DataObject;
+      return _categoryExtractor.ExtractBuiltInCategory(parentDataObject, tc.Current);
+    }
+
+    return null;
+  }
+
+  public void SetFamilyCategory(Document familyDoc, string? builtInCategoryString)
+  {
+    if (!familyDoc.IsFamilyDocument || string.IsNullOrEmpty(builtInCategoryString))
+    {
+      return;
+    }
+
+    if (Enum.TryParse(builtInCategoryString, out BuiltInCategory bic))
+    {
+      try
+      {
+        Category targetCategory = familyDoc.Settings.Categories.get_Item(bic);
+        if (targetCategory != null)
+        {
+          familyDoc.OwnerFamily.FamilyCategory = targetCategory;
+        }
+      }
+      catch (Autodesk.Revit.Exceptions.ArgumentException)
+      {
+        _logger.LogInformation("Category {Category} cannot be assigned to a Family. Falling back to default.", bic);
+      }
+      catch (Autodesk.Revit.Exceptions.InvalidOperationException ex)
+      {
+        _logger.LogWarning(ex, "Invalid operation when setting category {Category}. Falling back to default.", bic);
+      }
+    }
+  }
+}
@@ -0,0 +1,336 @@
+using Autodesk.Revit.DB;
+using Microsoft.Extensions.Logging;
+using Speckle.Converters.Common.Objects;
+using Speckle.Objects.Other;
+using Speckle.Sdk;
+using Speckle.Sdk.Common;
+using Speckle.Sdk.Models;
+using Speckle.Sdk.Models.Collections;
+using Speckle.Sdk.Models.Extensions;
+using Speckle.Sdk.Models.GraphTraversal;
+using Speckle.Sdk.Models.Instances;
+using SMesh = Speckle.Objects.Geometry.Mesh;
+
+namespace Speckle.Connectors.Revit.HostApp;
+
+/// <summary>
+/// Handles the low-level conversion and baking of Speckle geometries into a Revit Family Document.
+/// Extracted from RevitFamilyBaker to separate geometry generation from high-level orchestration, reducing class coupling.
+/// </summary>
+public class FamilyGeometryBaker
+{
+  private readonly ILogger<FamilyGeometryBaker> _logger;
+  private readonly ITypedConverter<Base, List<GeometryObject>> _geometryConverter;
+  private readonly ITypedConverter<SMesh, GeometryObject> _freeformMeshConverter;
+
+  public FamilyGeometryBaker(
+    ILogger<FamilyGeometryBaker> logger,
+    ITypedConverter<Base, List<GeometryObject>> geometryConverter,
+    ITypedConverter<SMesh, GeometryObject> freeformMeshConverter
+  )
+  {
+    _logger = logger;
+    _geometryConverter = geometryConverter;
+    _freeformMeshConverter = freeformMeshConverter;
+  }
+
+  public void BakeFamilyGeometry(
+    Document famDoc,
+    InstanceDefinitionProxy definition,
+    IReadOnlyDictionary<string, TraversalContext> objectLookup,
+    IReadOnlyDictionary<string, RenderMaterial> materialMap,
+    FamilyMaterialManager materialManager,
+    Action<Document, InstanceProxy, FamilyMaterialManager?> placeNestedInstanceAction
+  )
+  {
+    if (definition.objects.Count == 0)
+    {
+      return;
+    }
+
+    foreach (var id in definition.objects)
+    {
+      if (!objectLookup.TryGetValue(id, out var tc))
+      {
+        continue;
+      }
+
+      string? extractedSubcategoryName = null;
+      var parentTc = tc.Parent;
+      while (parentTc != null)
+      {
+        if (parentTc.Current is Collection col && !string.IsNullOrWhiteSpace(col.name))
+        {
+          extractedSubcategoryName = col.name;
+          break;
+        }
+        parentTc = parentTc.Parent;
+      }
+
+      ProcessObjectForFamily(
+        famDoc,
+        tc.Current,
+        null,
+        definition.name,
+        extractedSubcategoryName,
+        materialManager,
+        materialMap,
+        placeNestedInstanceAction
+      );
+    }
+  }
+
+  private void ProcessObjectForFamily(
+    Document famDoc,
+    Base obj,
+    Category? currentSubcategory,
+    string familyName,
+    string? extractedSubcategoryName,
+    FamilyMaterialManager? materialManager,
+    IReadOnlyDictionary<string, RenderMaterial>? materialMap,
+    Action<Document, InstanceProxy, FamilyMaterialManager?> placeNestedInstanceAction
+  )
+  {
+    try
+    {
+      Category? newSubcategory = currentSubcategory;
+      string? subcategoryName = extractedSubcategoryName ?? (obj as Collection)?.name;
+
+      if (!string.IsNullOrWhiteSpace(subcategoryName))
+      {
+        var familyCategory = famDoc.OwnerFamily.FamilyCategory;
+        if (familyCategory != null)
+        {
+          if (familyCategory.SubCategories.Contains(subcategoryName))
+          {
+            newSubcategory = familyCategory.SubCategories.get_Item(subcategoryName);
+          }
+          else
+          {
+            try
+            {
+              newSubcategory = famDoc.Settings.Categories.NewSubcategory(familyCategory, subcategoryName);
+            }
+            catch (Autodesk.Revit.Exceptions.ArgumentException)
+            {
+              _logger.LogWarning("Failed to create Revit subcategory with name: {SubcategoryName}", subcategoryName);
+              newSubcategory = currentSubcategory;
+            }
+          }
+        }
+      }
+
+      if (obj is Collection col)
+      {
+        foreach (var element in col.elements)
+        {
+          ProcessObjectForFamily(
+            famDoc,
+            element,
+            newSubcategory,
+            familyName,
+            null,
+            materialManager,
+            materialMap,
+            placeNestedInstanceAction
+          );
+        }
+      }
+      else if (obj is InstanceProxy instanceProxy)
+      {
+        placeNestedInstanceAction(famDoc, instanceProxy, materialManager);
+      }
+      else
+      {
+        BakeGeometry(famDoc, obj, newSubcategory, materialManager, materialMap, placeNestedInstanceAction);
+      }
+    }
+    catch (Autodesk.Revit.Exceptions.ApplicationException ex)
+    {
+      _logger.LogWarning(ex, "Revit API error baking object {ObjectId} into family {Family}", obj.id, familyName);
+    }
+    catch (SpeckleException ex)
+    {
+      _logger.LogWarning(ex, "Speckle error baking object {ObjectId} into family {Family}", obj.id, familyName);
+    }
+  }
+
+  private void BakeGeometry(
+    Document famDoc,
+    Base obj,
+    Category? subcategory,
+    FamilyMaterialManager? materialManager,
+    IReadOnlyDictionary<string, RenderMaterial>? materialMap,
+    Action<Document, InstanceProxy, FamilyMaterialManager?> placeNestedInstanceAction
+  )
+  {
+    string objectId = obj.applicationId ?? obj.id.NotNull();
+    string? speckleMatId = null;
+
+    if (materialMap != null && materialMap.TryGetValue(objectId, out var mat))
+    {
+      speckleMatId = mat.id;
+    }
+
+    if (obj is SMesh mesh)
+    {
+      BakeMesh(famDoc, mesh, subcategory, speckleMatId, materialManager);
+      return;
+    }
+
+    try
+    {
+      var geometries = _geometryConverter.Convert(obj);
+
+      if (geometries.Count > 0)
+      {
+        var solids = new List<Solid>(geometries.Count);
+        var nonSolids = new List<GeometryObject>(geometries.Count);
+
+        foreach (var geom in geometries)
+        {
+          if (geom is Solid s && !s.Faces.IsEmpty)
+          {
+            solids.Add(s);
+          }
+          else
+          {
+            nonSolids.Add(geom);
+          }
+        }
+
+        foreach (var solid in solids)
+        {
+          using var freeFormElement = FreeFormElement.Create(famDoc, solid);
+          if (subcategory != null)
+          {
+            freeFormElement.Subcategory = subcategory;
+          }
+
+          if (
+            materialManager != null
+            && speckleMatId != null
+            && materialManager.FamilyParameters.TryGetValue(speckleMatId, out var famParam)
+          )
+          {
+            Parameter ffeMatParam = freeFormElement.get_Parameter(BuiltInParameter.MATERIAL_ID_PARAM);
+            if (ffeMatParam != null && famDoc.FamilyManager.CanElementParameterBeAssociated(ffeMatParam))
+            {
+              famDoc.FamilyManager.AssociateElementParameterToFamilyParameter(ffeMatParam, famParam);
+            }
+          }
+        }
+
+        if (nonSolids.Count > 0)
+        {
+          // try to use the Family's actual Category, otherwise default to Generic Model
+          ElementId categoryId =
+            famDoc.OwnerFamily.FamilyCategory?.Id ?? new ElementId(BuiltInCategory.OST_GenericModel);
+
+          if (!DirectShape.IsValidCategoryId(categoryId, famDoc))
+          {
+            categoryId = new ElementId(BuiltInCategory.OST_GenericModel);
+          }
+
+          try
+          {
+            using var ds = DirectShape.CreateElement(famDoc, categoryId);
+            ds.SetShape(nonSolids);
+          }
+          catch (Autodesk.Revit.Exceptions.ArgumentException ex)
+          {
+            _logger.LogWarning(
+              ex,
+              "DirectShape rejected Category ID {CategoryId}, falling back to Generic Model",
+              categoryId
+            );
+
+            using var fallbackDs = DirectShape.CreateElement(famDoc, new ElementId(BuiltInCategory.OST_GenericModel));
+            fallbackDs.SetShape(nonSolids);
+          }
+        }
+
+        return;
+      }
+    }
+    catch (SpeckleException) { }
+
+    var displayValues = obj.TryGetDisplayValue();
+    if (displayValues != null)
+    {
+      foreach (var item in displayValues)
+      {
+        BakeGeometry(famDoc, item, subcategory, materialManager, materialMap, placeNestedInstanceAction);
+      }
+    }
+  }
+
+  private void BakeMesh(
+    Document famDoc,
+    SMesh mesh,
+    Category? subcategory,
+    string? speckleMatId,
+    FamilyMaterialManager? materialManager
+  )
+  {
+    GeometryObject geomObject;
+    try
+    {
+      geomObject = _freeformMeshConverter.Convert(mesh);
+    }
+    catch (SpeckleException ex)
+    {
+      _logger.LogWarning(ex, "Failed to convert Speckle Mesh into Revit freeform geometry.");
+      return;
+    }
+
+    if (geomObject is Solid solid)
+    {
+      using var freeFormElement = FreeFormElement.Create(famDoc, solid);
+      if (subcategory != null)
+      {
+        freeFormElement.Subcategory = subcategory;
+      }
+
+      if (
+        materialManager != null
+        && speckleMatId != null
+        && materialManager.FamilyParameters.TryGetValue(speckleMatId, out var famParam)
+      )
+      {
+        Parameter ffeMatParam = freeFormElement.get_Parameter(BuiltInParameter.MATERIAL_ID_PARAM);
+        if (ffeMatParam != null && famDoc.FamilyManager.CanElementParameterBeAssociated(ffeMatParam))
+        {
+          famDoc.FamilyManager.AssociateElementParameterToFamilyParameter(ffeMatParam, famParam);
+        }
+      }
+    }
+    else if (geomObject is Mesh revitMesh)
+    {
+      // try to use the Family's actual Category, otherwise default to Generic Model
+      ElementId categoryId = famDoc.OwnerFamily.FamilyCategory?.Id ?? new ElementId(BuiltInCategory.OST_GenericModel);
+
+      if (!DirectShape.IsValidCategoryId(categoryId, famDoc))
+      {
+        categoryId = new ElementId(BuiltInCategory.OST_GenericModel);
+      }
+
+      try
+      {
+        using var ds = DirectShape.CreateElement(famDoc, categoryId);
+        ds.SetShape([revitMesh]);
+      }
+      catch (Autodesk.Revit.Exceptions.ArgumentException ex)
+      {
+        _logger.LogWarning(
+          ex,
+          "DirectShape rejected Category ID {CategoryId}, falling back to Generic Model",
+          categoryId
+        );
+
+        using var fallbackDs = DirectShape.CreateElement(famDoc, new ElementId(BuiltInCategory.OST_GenericModel));
+        fallbackDs.SetShape([revitMesh]);
+      }
+    }
+  }
+}
@@ -0,0 +1,199 @@
+using Autodesk.Revit.DB;
+using Microsoft.Extensions.Logging;
+using Speckle.Objects.Other;
+using Speckle.Sdk;
+using Speckle.Sdk.Common;
+using Speckle.Sdk.Models.GraphTraversal;
+using Speckle.Sdk.Models.Instances;
+
+namespace Speckle.Connectors.Revit.HostApp;
+
+/// <summary>
+/// Manages the resolution and assignment of materials, subcategories, and parameters
+/// strictly within the context of a temporary Family Document.
+/// </summary>
+public class FamilyMaterialManager
+{
+  private readonly RevitMaterialBaker _materialBaker;
+  private readonly ILogger _logger;
+  private static readonly char[] s_invalidRevitChars =
+  [
+    '\\',
+    ':',
+    '{',
+    '}',
+    '[',
+    ']',
+    '|',
+    ';',
+    '<',
+    '>',
+    '?',
+    '`',
+    '~'
+  ];
+
+  public Dictionary<string, FamilyParameter> FamilyParameters { get; } = [];
+  public Dictionary<string, ElementId> SubCategories { get; } = [];
+  private Dictionary<string, ElementId> BakedMaterials { get; } = [];
+
+  public FamilyMaterialManager(RevitMaterialBaker materialBaker, ILogger logger)
+  {
+    _materialBaker = materialBaker;
+    _logger = logger;
+  }
+
+  /// <summary>
+  /// Sanitizes string to ensure it is valid for Revit Parameters and SubCategories.
+  /// </summary>
+  public static string GetSafeName(string rawName)
+  {
+    if (string.IsNullOrWhiteSpace(rawName))
+    {
+      return "Unnamed";
+    }
+
+    char[] buffer = rawName.ToCharArray();
+    bool changed = false;
+
+    for (int i = 0; i < buffer.Length; i++)
+    {
+      if (Array.IndexOf(s_invalidRevitChars, buffer[i]) >= 0)
+      {
+        buffer[i] = '_';
+        changed = true;
+      }
+    }
+
+    return changed ? new string(buffer) : rawName;
+  }
+
+  public void SetupFamilyMaterials(
+    Document famDoc,
+    InstanceDefinitionProxy definition,
+    IReadOnlyDictionary<string, TraversalContext> objectLookup,
+    IReadOnlyDictionary<string, RenderMaterial> materialMap
+  )
+  {
+    Category baseCategory = famDoc.OwnerFamily.FamilyCategory;
+
+    foreach (var id in definition.objects)
+    {
+      if (!objectLookup.TryGetValue(id, out var tc))
+      {
+        continue;
+      }
+
+      var obj = tc.Current;
+      string objectId = obj.applicationId ?? obj.id.NotNull();
+
+      if (materialMap.TryGetValue(objectId, out var renderMat))
+      {
+        if (BakedMaterials.ContainsKey(renderMat.id.NotNullOrWhiteSpace()))
+        {
+          continue;
+        }
+
+        try
+        {
+          // 1. Bake the material locally
+          ElementId famMatId = _materialBaker.BakeMaterial(renderMat, famDoc);
+          BakedMaterials[renderMat.id] = famMatId;
+
+          // 2. Setup Subcategory (for DirectShapes)
+          string rawName = string.IsNullOrWhiteSpace(renderMat.name) ? renderMat.id : renderMat.name;
+          string safeName = GetSafeName(rawName);
+
+          string subCatName = $"Mat_{safeName}";
+          subCatName = subCatName.Length > 50 ? subCatName[..50] : subCatName;
+
+          if (baseCategory != null)
+          {
+            if (!baseCategory.SubCategories.Contains(subCatName))
+            {
+              Category subCat = famDoc.Settings.Categories.NewSubcategory(baseCategory, subCatName);
+              subCat.Material = famDoc.GetElement(famMatId) as Material;
+              SubCategories[renderMat.id] = subCat.Id;
+            }
+            else
+            {
+              SubCategories[renderMat.id] = baseCategory.SubCategories.get_Item(subCatName).Id;
+            }
+          }
+
+          // 3. Setup Family Parameter (for FreeFormElements)
+          string paramName = $"Material_{safeName}";
+          FamilyParameter? existingParam = famDoc.FamilyManager.get_Parameter(paramName);
+          if (existingParam == null)
+          {
+            FamilyParameter famParam = famDoc.FamilyManager.AddParameter(
+              paramName,
+              GroupTypeId.Materials,
+              SpecTypeId.Reference.Material,
+              false
+            );
+            FamilyParameters[renderMat.id] = famParam;
+          }
+          else
+          {
+            FamilyParameters[renderMat.id] = existingParam;
+          }
+        }
+        catch (Exception ex) when (!ex.IsFatal())
+        {
+          _logger.LogWarning(ex, "Failed to setup family material {MatName}", renderMat.name);
+        }
+      }
+    }
+  }
+
+  public static void AssignProjectMaterialsToFamily(
+    Document document,
+    FamilySymbol symbol,
+    IReadOnlyDictionary<string, ElementId> originalNameToProjectMatId
+  )
+  {
+    Category? baseCategory = document.Settings.Categories.get_Item(BuiltInCategory.OST_GenericModel);
+
+    // Create a local map with sanitized keys so it perfectly matches the safeNames applied in the Family
+    var sanitizedMatMap = new Dictionary<string, ElementId>();
+    foreach (var kvp in originalNameToProjectMatId)
+    {
+      sanitizedMatMap[GetSafeName(kvp.Key)] = kvp.Value;
+    }
+
+    foreach (Parameter p in symbol.Parameters)
+    {
+      if (p.Definition.Name.StartsWith("Material_") && p.StorageType == StorageType.ElementId)
+      {
+        string safeName = p.Definition.Name["Material_".Length..];
+
+        if (sanitizedMatMap.TryGetValue(safeName, out var projMatId) && !p.IsReadOnly)
+        {
+          p.Set(projMatId);
+        }
+      }
+    }
+
+    if (baseCategory != null)
+    {
+      foreach (var kvp in sanitizedMatMap)
+      {
+        string safeName = kvp.Key;
+        ElementId projMatId = kvp.Value;
+
+        string subCatName = $"Mat_{safeName}";
+        subCatName = subCatName.Length > 50 ? subCatName[..50] : subCatName;
+
+        if (baseCategory.SubCategories.Contains(subCatName))
+        {
+          Category projSubCat = baseCategory.SubCategories.get_Item(subCatName);
+          if (projSubCat != null && document.GetElement(projMatId) is Material projMat)
+          {
+            projSubCat.Material = projMat;
+          }
+        }
+      }
+    }
+  }
+}
@@ -0,0 +1,184 @@
+using Autodesk.Revit.DB;
+using Microsoft.Extensions.Logging;
+using Speckle.DoubleNumerics;
+
+namespace Speckle.Connectors.Revit.HostApp;
+
+/// <summary>
+/// Pure math and transform utilities for Revit Family Instance placement.
+/// </summary>
+/// <remarks>
+/// Architecturally, these methods live in the Connector rather than the Converters project
+/// because stripping scale/skew and applying API mirroring are Host App-specific workarounds
+/// for Revit's shitty Family Instance rules, not general stateless conversion logic.
+/// </remarks>
+public class FamilyTransformUtils
+{
+  private readonly ILogger<FamilyTransformUtils> _logger;
+
+  public FamilyTransformUtils(ILogger<FamilyTransformUtils> logger)
+  {
+    _logger = logger;
+  }
+
+  /// <summary>
+  /// Checks if a transform matrix contains non-uniform scaling or shear/skew.
+  /// </summary>
+  /// <remarks>
+  /// Revit family instances natively reject matrices with scale or skew.
+  /// We flag these matrices so we can sanitize them before placement.
+  /// </remarks>
+  public bool HasScaleOrSkew(Matrix4x4 matrix)
+  {
+    // Extract lengths of basis vectors
+    var lenX = Math.Sqrt(matrix.M11 * matrix.M11 + matrix.M21 * matrix.M21 + matrix.M31 * matrix.M31);
+    var lenY = Math.Sqrt(matrix.M12 * matrix.M12 + matrix.M22 * matrix.M22 + matrix.M32 * matrix.M32);
+    var lenZ = Math.Sqrt(matrix.M13 * matrix.M13 + matrix.M23 * matrix.M23 + matrix.M33 * matrix.M33);
+
+    // Calculate dot products to check for orthogonality
+    var dotXy = matrix.M11 * matrix.M12 + matrix.M21 * matrix.M22 + matrix.M31 * matrix.M32;
+    var dotXz = matrix.M11 * matrix.M13 + matrix.M21 * matrix.M23 + matrix.M31 * matrix.M33;
+    var dotYz = matrix.M12 * matrix.M13 + matrix.M22 * matrix.M23 + matrix.M32 * matrix.M33;
+
+    double tol = 1e-4;
+
+    bool isOrthogonal = Math.Abs(dotXy) < tol && Math.Abs(dotXz) < tol && Math.Abs(dotYz) < tol;
+    bool isUnitScale = Math.Abs(lenX - 1.0) < tol && Math.Abs(lenY - 1.0) < tol && Math.Abs(lenZ - 1.0) < tol;
+
+    return !isOrthogonal || !isUnitScale;
+  }
+
+  /// <summary>
+  /// Sanitizes a transform matrix by stripping out any scale or skew, returning a rigid transform.
+  /// </summary>
+  public Matrix4x4 RemoveScaleAndSkew(Matrix4x4 matrix)
+  {
+    // 1. Extract Z column and normalize
+    double zX = matrix.M13,
+      zY = matrix.M23,
+      zZ = matrix.M33;
+    double lenZ = Math.Sqrt(zX * zX + zY * zY + zZ * zZ);
+    if (lenZ > 1e-6)
+    {
+      zX /= lenZ;
+      zY /= lenZ;
+      zZ /= lenZ;
+    }
+    else
+    {
+      zX = 0;
+      zY = 0;
+      zZ = 1;
+    }
+
+    // 2. Extract Y column
+    double yX = matrix.M12,
+      yY = matrix.M22,
+      yZ = matrix.M32;
+
+    // 3. Cross product Y and Z to get orthogonal X
+    double xX = yY * zZ - yZ * zY;
+    double xY = yZ * zX - yX * zZ;
+    double xZ = yX * zY - yY * zX;
+    double lenX = Math.Sqrt(xX * xX + xY * xY + xZ * xZ);
+    if (lenX > 1e-6)
+    {
+      xX /= lenX;
+      xY /= lenX;
+      xZ /= lenX;
+    }
+    else
+    {
+      xX = 1;
+      xY = 0;
+      xZ = 0;
+    }
+
+    // 4. Cross product Z and X to get orthogonal unit Y
+    yX = zY * xZ - zZ * xY;
+    yY = zZ * xX - zX * xZ;
+    yZ = zX * xY - zY * xX;
+    double lenY = Math.Sqrt(yX * yX + yY * yY + yZ * yZ);
+    if (lenY > 1e-6)
+    {
+      yX /= lenY;
+      yY /= lenY;
+      yZ /= lenY;
+    }
+
+    return new Matrix4x4(
+      xX,
+      yX,
+      zX,
+      matrix.M14,
+      xY,
+      yY,
+      zY,
+      matrix.M24,
+      xZ,
+      yZ,
+      zZ,
+      matrix.M34,
+      matrix.M41,
+      matrix.M42,
+      matrix.M43,
+      matrix.M44
+    );
+  }
+
+  /// <summary>
+  /// Evaluates the determinant of a matrix to check if it encodes a mirrored state.
+  /// </summary>
+  /// <remarks>
+  /// A negative determinant implies a left-handed coordinate system (mirroring).
+  /// We extract this so we can apply the mirror via Revit's native API instead.
+  /// </remarks>
+  public (bool X, bool Y, bool Z) GetMirrorState(Matrix4x4 matrix)
+  {
+    var det =
+      matrix.M11 * (matrix.M22 * matrix.M33 - matrix.M23 * matrix.M32)
+      - matrix.M12 * (matrix.M21 * matrix.M33 - matrix.M23 * matrix.M31)
+      + matrix.M13 * (matrix.M21 * matrix.M32 - matrix.M22 * matrix.M31);
+
+    return det < 0 ? (true, false, false) : (false, false, false);
+  }
+
+  /// <summary>
+  /// Applies native Revit mirror operations to an element based on the evaluated mirror state.
+  /// </summary>
+  /// <remarks>
+  /// Because we strip the mirrored (left-handed) state from the initial transform to keep Revit happy,
+  /// we must restore the mirrored geometry as a post-placement operation.
+  /// </remarks>
+  public void ApplyMirroring(
+    Document document,
+    ElementId elementId,
+    Autodesk.Revit.DB.Plane plane,
+    (bool X, bool Y, bool Z) mirrorState
+  )
+  {
+    var mirrorOperations = new List<(string name, bool shouldMirror, Autodesk.Revit.DB.Plane mirrorPlane)>
+    {
+      ("YZ", mirrorState.X, Autodesk.Revit.DB.Plane.CreateByOriginAndBasis(plane.Origin, plane.YVec, plane.Normal)),
+      ("XZ", mirrorState.Y, Autodesk.Revit.DB.Plane.CreateByOriginAndBasis(plane.Origin, plane.XVec, plane.Normal)),
+      ("XY", mirrorState.Z, Autodesk.Revit.DB.Plane.CreateByOriginAndBasis(plane.Origin, plane.XVec, plane.YVec))
+    };
+
+    foreach (var (name, _, mirrorPlane) in mirrorOperations.Where(op => op.shouldMirror))
+    {
+      try
+      {
+        document.Regenerate();
+        ElementTransformUtils.MirrorElements(document, [elementId], mirrorPlane, false);
+      }
+      catch (Autodesk.Revit.Exceptions.ApplicationException e)
+      {
+        _logger.LogWarning(e, "Failed to mirror element on {PlaneName} plane", name);
+      }
+      finally
+      {
+        mirrorPlane.Dispose();
+      }
+    }
+  }
+}
@@ -0,0 +1,9 @@
+namespace Speckle.Connectors.Revit.HostApp;
+
+public class ParameterChangeRequest
+{
+  public required string ApplicationId { get; init; }
+  public required string Path { get; init; }
+  public object? To { get; init; }
+  public string? InternalDefinitionName { get; set; }
+}
@@ -0,0 +1,375 @@
+using Microsoft.Extensions.Logging;
+using Speckle.Converters.RevitShared.Helpers;
+using Speckle.Converters.RevitShared.Services;
+using Speckle.Sdk;
+using DB = Autodesk.Revit.DB;
+
+namespace Speckle.Connectors.Revit.HostApp;
+
+/// <summary>
+/// Updates parameter values on Revit elements. Mirrors the structure from ParameterExtractor.
+/// Path format: ["Instance Parameters" | "Type Parameters" | "System Type Parameters", "GroupName", "ParameterName"]
+/// </summary>
+public class ParameterUpdater
+{
+  private readonly RevitContext _revitContext;
+  private readonly ScalingServiceToHost _scalingServiceToHost;
+  private readonly ILogger<ParameterUpdater> _logger;
+
+  public ParameterUpdater(
+    RevitContext revitContext,
+    ScalingServiceToHost scalingServiceToHost,
+    ILogger<ParameterUpdater> logger
+  )
+  {
+    _revitContext = revitContext;
+    _scalingServiceToHost = scalingServiceToHost;
+    _logger = logger;
+  }
+
+  public UpdateResult Update(DB.Element element, string[] path, object? newValue, string? internalDefinitionName = null)
+  {
+    // path = ["Instance Parameters", "Identity Data", "Mark"]
+    if (path.Length != 3)
+    {
+      return UpdateResult.Fail(
+        $"Path must have exactly 3 segments: [scope, group, parameter]. Got: {string.Join(" → ", path)}"
+      );
+    }
+
+    var parameterScope = path[0]; // "Instance Parameters" | "Type Parameters" | "System Type Parameters"
+    var groupName = path[1]; // "Identity Data", "Dimensions", etc.
+    var parameterKey = path[2]; // human-readable name (or internalDefinitionName if collision)
+
+    // get target element based on scope
+    var targetElement = GetTargetElement(element, parameterScope);
+    if (targetElement == null)
+    {
+      return UpdateResult.Fail($"Could not resolve target for scope: {parameterScope}");
+    }
+
+    // find the parameter (now using the robust lookup)
+    var parameter = FindParameter(targetElement, groupName, parameterKey, internalDefinitionName);
+    if (parameter == null)
+    {
+      return UpdateResult.Fail($"Parameter not found: {parameterKey} in group {groupName}");
+    }
+
+    if (parameter.IsReadOnly)
+    {
+      return UpdateResult.Fail($"Parameter '{parameterKey}' is readonly in Revit");
+    }
+
+    return SetParameterValue(parameter, newValue);
+  }
+
+  private DB.Element? GetTargetElement(DB.Element element, string scope) =>
+    scope switch
+    {
+      "Instance Parameters" => element,
+      "Type Parameters" => GetTypeElement(element),
+      "System Type Parameters" => GetSystemTypeElement(element),
+      _ => null
+    };
+
+  private DB.Element? GetTypeElement(DB.Element element)
+  {
+    var typeId = element.GetTypeId();
+    if (typeId == DB.ElementId.InvalidElementId)
+    {
+      return null;
+    }
+    return _revitContext.UIApplication?.ActiveUIDocument.Document.GetElement(typeId);
+  }
+
+  private DB.Element? GetSystemTypeElement(DB.Element element)
+  {
+    var system = GetMEPSystem(element);
+    if (system == null)
+    {
+      return null;
+    }
+
+    return _revitContext.UIApplication?.ActiveUIDocument.Document.GetElement(system.GetTypeId());
+  }
+
+  private DB.MEPSystem? GetMEPSystem(DB.Element element)
+  {
+    if (element is DB.MEPCurve curve)
+    {
+      return curve.MEPSystem;
+    }
+
+    if (element is DB.FamilyInstance fi)
+    {
+      var cm = fi.MEPModel?.ConnectorManager;
+      if (cm != null)
+      {
+        foreach (DB.Connector conn in cm.Connectors)
+        {
+          if (conn.ConnectorType == DB.ConnectorType.Physical && conn.IsConnected && conn.MEPSystem != null)
+          {
+            return conn.MEPSystem;
+          }
+        }
+      }
+    }
+
+    return null;
+  }
+
+  private DB.Parameter? FindParameter(
+    DB.Element element,
+    string groupName,
+    string parameterKey,
+    string? internalDefinitionName
+  )
+  {
+    // fast path: direct lookup using the internal definition name
+    if (!string.IsNullOrEmpty(internalDefinitionName))
+    {
+      // try as BuiltInParameter enum
+      if (Enum.TryParse(internalDefinitionName, out DB.BuiltInParameter bip) && bip != DB.BuiltInParameter.INVALID)
+      {
+        var param = element.get_Parameter(bip);
+        if (param != null)
+        {
+          return param;
+        }
+      }
+
+      // try as shared parameter Guid
+      if (Guid.TryParse(internalDefinitionName, out Guid guid))
+      {
+        var param = element.get_Parameter(guid);
+        if (param != null)
+        {
+          return param;
+        }
+      }
+    }
+
+    // fallback: iteration for project parameters or missing internal names
+    DB.Parameter? fallbackParameter = null;
+
+    foreach (DB.Parameter parameter in element.Parameters)
+    {
+      var definition = parameter.Definition;
+      if (definition == null)
+      {
+        continue;
+      }
+
+      var currentInternalName = GetInternalDefinitionName(parameter);
+      var humanName = definition.Name;
+
+      // exact internal name match (covers project params that aren't BuiltIn/Shared)
+      if (!string.IsNullOrEmpty(internalDefinitionName) && currentInternalName == internalDefinitionName)
+      {
+        return parameter;
+      }
+
+      // fallback human-readable name matching
+      if (humanName == parameterKey || currentInternalName == parameterKey)
+      {
+        var paramGroup = definition.GetGroupTypeId();
+        var groupLabel = DB.LabelUtils.GetLabelForGroup(paramGroup);
+
+        if (groupLabel == groupName)
+        {
+          return parameter;
+        }
+        fallbackParameter ??= parameter;
+      }
+    }
+
+    return fallbackParameter;
+  }
+
+  private string GetInternalDefinitionName(DB.Parameter parameter)
+  {
+    if (parameter.Definition is DB.InternalDefinition internalDef)
+    {
+      var bip = internalDef.BuiltInParameter;
+      if (bip != DB.BuiltInParameter.INVALID)
+      {
+        return bip.ToString();
+      }
+    }
+
+    return parameter.Definition.Name;
+  }
+
+  private UpdateResult SetParameterValue(DB.Parameter parameter, object? newValue)
+  {
+    var paramName = parameter.Definition.Name;
+    if (newValue == null)
+    {
+      if (parameter.StorageType == DB.StorageType.String)
+      {
+        return parameter.Set(string.Empty)
+          ? UpdateResult.Success()
+          : UpdateResult.Fail("Failed to clear string parameter");
+      }
+      return UpdateResult.Fail("Cannot set non-string parameter to null");
+    }
+
+    try
+    {
+      var success = parameter.StorageType switch
+      {
+        DB.StorageType.String => parameter.Set(newValue.ToString()),
+        DB.StorageType.Integer => SetIntegerValue(parameter, newValue),
+        DB.StorageType.Double => SetDoubleValue(parameter, newValue),
+        DB.StorageType.ElementId => SetElementIdValue(parameter, newValue),
+        _ => false
+      };
+
+      return success ? UpdateResult.Success() : UpdateResult.Fail($"Failed to set parameter value to: {newValue}");
+    }
+    catch (Exception ex) when (!ex.IsFatal())
+    {
+      _logger.LogWarning(ex, "Failed to set parameter value");
+      return UpdateResult.Fail($"Exception for '{paramName}': {ex.Message}");
+    }
+  }
+
+  private bool SetIntegerValue(DB.Parameter parameter, object newValue)
+  {
+    if (newValue is int i)
+    {
+      return parameter.Set(i);
+    }
+
+    if (newValue is bool b)
+    {
+      return parameter.Set(b ? 1 : 0);
+    }
+
+    if (int.TryParse(newValue.ToString(), out var parsed))
+    {
+      return parameter.Set(parsed);
+    }
+
+    var strValue = newValue.ToString();
+    if (strValue == "Yes")
+    {
+      return parameter.Set(1);
+    }
+    if (strValue == "No")
+    {
+      return parameter.Set(0);
+    }
+
+    return parameter.SetValueString(strValue);
+  }
+
+  private bool SetDoubleValue(DB.Parameter parameter, object newValue)
+  {
+    double doubleValue;
+
+    if (newValue is double d)
+    {
+      doubleValue = d;
+    }
+    else if (newValue is int intVal)
+    {
+      doubleValue = intVal;
+    }
+    else if (double.TryParse(newValue.ToString(), out var parsed))
+    {
+      doubleValue = parsed;
+    }
+    else
+    {
+      return false;
+    }
+
+    var internalValue = _scalingServiceToHost.ScaleToNative(doubleValue, parameter.GetUnitTypeId());
+    return parameter.Set(internalValue);
+  }
+
+  private bool SetElementIdValue(DB.Parameter parameter, object newValue)
+  {
+    if (newValue is DB.ElementId eid)
+    {
+      return parameter.Set(eid);
+    }
+
+    // TODO: check this fckr later
+
+    //     if (newValue is long idInt)
+    //     {
+    // #if REVIT2024_OR_GREATER
+    //       return parameter.Set(new DB.ElementId(idInt));
+    // #else
+    //       return parameter.Set(new DB.ElementId((long)idInt));
+    // #endif
+    //     }
+    //
+    //     if (long.TryParse(newValue.ToString(), out var parsedId))
+    //     {
+    // #if REVIT2024_OR_GREATER
+    //       return parameter.Set(new DB.ElementId(parsedId));
+    // #else
+    //       return parameter.Set(new DB.ElementId((long)parsedId));
+    // #endif
+    //     }
+
+    var elementName = newValue.ToString();
+    if (elementName != null)
+    {
+      var foundElement = FindElementByName(elementName);
+      if (foundElement != null)
+      {
+        return parameter.Set(foundElement.Id);
+      }
+    }
+
+    return false;
+  }
+
+  private DB.Element? FindElementByName(string name)
+  {
+    var doc = _revitContext.UIApplication?.ActiveUIDocument.Document;
+
+    using var materialCollector = new DB.FilteredElementCollector(doc);
+    var material = materialCollector.OfClass(typeof(DB.Material)).FirstOrDefault(e => e.Name == name);
+    if (material != null)
+    {
+      return material;
+    }
+
+    using var levelCollector = new DB.FilteredElementCollector(doc);
+    var level = levelCollector.OfClass(typeof(DB.Level)).FirstOrDefault(e => e.Name == name);
+    if (level != null)
+    {
+      return level;
+    }
+    using var phaseCollector = new DB.FilteredElementCollector(doc);
+    var phase = phaseCollector.OfClass(typeof(DB.Phase)).FirstOrDefault(e => e.Name == name);
+    if (phase != null)
+    {
+      return phase;
+    }
+
+    return null;
+  }
+}
+
+// TODO: we will see, extract this guy out
+public readonly struct UpdateResult
+{
+  public bool IsSuccess { get; }
+  public string? ErrorMessage { get; }
+
+  private UpdateResult(bool success, string? error)
+  {
+    IsSuccess = success;
+    ErrorMessage = error;
+  }
+
+  public static UpdateResult Success() => new(true, null);
+
+  public static UpdateResult Fail(string message) => new(false, message);
+}
--- a/Show More
+++ b/Show More