Metahuman For Maya - Resaving Head dna in Expression Editor snaps vertices to 0, 0, 0, in UE after import

General Issues and Bug Reporting
1

Summary

Save Metahuman DNA in Expression Editor causes teeth vertices on LOD1 to snap to 0, 0, 0 point in UE (in maya those verts are missing)

Please select what you are reporting on:

Creative

What Type of Bug are you experiencing?

UI/Tools

Steps to Reproduce

  1. Load head dna in Metahuman Expression Editor in Maya
  2. go to Neutral Pose
  3. Save Metahuman DNA
  4. Choose bodytype for export
  5. Export all with newly created dna asset
  6. Import LOD1 Mesh to editor
  7. See snapped vertices in Skeletal mesh editor
  8. In maya change DNA file for newly created one via expression editor
  9. Load LOD1 meshes
  10. See some vertices are misisng on teeth

Bug
Bug904×1222 875 KB

Bug2
Bug21920×1045 457 KB

Expected Result

I expect that all meshes across all LDOs have proper vertices placement and skinning in UE and proper display in maya

Observed Result

Few vertices on mesh lod1 are snapped in UE to 0, 0, 0 instead of proper placement and in maya those vertices are displayed black

Platform(s)

Windows 11, Maya 2025, Metahuman For Maya v. 1.1.14, Unreal Engine 5.6

Additional Notes

This bug occured in Metahuman for Maya version 1.01 and persists in 1.1.14