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
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-289244 in the post.
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Component | UE - Editor - Content Pipeline - Import and Export |
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Affects Versions | 5.5.4 |
Target Fix | 5.7 |
Created | May 22, 2025 |
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Updated | May 26, 2025 |