datasmith cannot export the custom normal that has already locked(mesh) in Blender

[langhua2025]

No matter what form of custom normal is exported, it cannot be exported along with the mesh.
All mesh will turn in to "shade smooth" in UE.
This feature is quite important for industrial models that have been processed in Blender.

[botero-dev]

Hello, I remember I implemented support for custom normals. If you're not getting them maybe some modifier is affecting the export.

Please share:

• Unreal Engine Version
• Blender Version
• Blender Plugin Version
• Demo File

This way I can track down the issue

[langhua2025]

I use UE5.7 and Blender 4.5.2, and datasmith uses the "bl_datasmith-12-UE_5.7" from the GitHub link(1.1.12). Please change the .doc file extension to .blend.

demo file car shell.doc