Description

When reimporting a static mesh asset before PIE execution, the value of bAllowCPUAccess is false.  If reimporting a static mesh asset while PIE is running, the value of bAllowCPUAccess is true. In addition, UVChannel is set to 8. 
This problem does not occur when reimporting outside of PIE or setting fbx interchange to false. 

When this problem occurs, the following log is output.

LogInterchangeEngine: [Pending] Importing
LogInterchangeEngine: Display: Interchange start importing source [C:/Projects/TP554/Resource/SM_Cube.FBX]
LogStaticMesh: Display: Waiting on static mesh StaticMesh /Game/LevelPrototyping/Meshes/SM_Cube.SM_Cube being ready before playing
LogStaticMesh: Warning: The difference between RenderData Bounds (Origin=X=0.000 Y=0.000 Z=0.000, BoxExtent=(X=0.000 Y=0.000 Z=0.000), SphereRadius=(0.000000)) and MeshDescription Bounds (Origin=X=50.000 Y=50.000 Z=50.000, BoxExtent=(X=50.000 Y=50.000 Z=50.000), SphereRadius=(86.602540)) is significative for StaticMesh /Game/LevelPrototyping/Meshes/SM_Cube.SM_Cube
LogStaticMesh: Warning: The difference between RenderData Bounds (Origin=X=0.000 Y=0.000 Z=0.000, BoxExtent=(X=0.000 Y=0.000 Z=0.000), SphereRadius=(0.000000)) and MeshDescription Bounds (Origin=X=50.000 Y=50.000 Z=50.000, BoxExtent=(X=50.000 Y=50.000 Z=50.000), SphereRadius=(86.602540)) is significative for StaticMesh /Game/LevelPrototyping/Meshes/SM_Cube.SM_Cube
LogInterchangeEngine: Display: Interchange import completed [C:/Projects/TP554/Resource/SM_Cube.FBX]
Interchange: Warning: [C:/Projects/TP554/Resource/SM_Cube.FBX : 'SM_Cube', StaticMesh] No smoothing group information was found for this mesh 'SM_Cube' in the FBX file. Please make sure to enable the 'Export Smoothing Groups' option in the FBX Exporter before exporting the file.
Interchange: Warning: [C:/Projects/TP554/Resource/SM_Cube.FBX : 'SM_Cube', StaticMesh] No smoothing group information was found for this mesh 'UCX_SM_Cube' in the FBX file. Please make sure to enable the 'Export Smoothing Groups' option in the FBX Exporter before exporting the file.
LogInterchangeEngine: [Pending] Importing - Operation completed.
LogInterchangeEngine: [Success] Import Done 
Steps to Reproduce
  1. Open Third Person Example sample project in editor
  2. Export SM_Cube asset
  3. Play in editor
  4. Reimport SM_Cube asset

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Unresolved
CreatedMay 22, 2025
UpdatedMay 26, 2025
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