Skeletal mesh merge doesn't support clothing. Looks like we should just be able to duplicate the clothing assets, clear the binding data and use ClothingAssetUtils::GetMeshClothingAssetBindings to pull the bindings from the source mesh, then map old section -> new section and rebind them post merge.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-89930 in the post.
| 1 | 
| Component | UE - Simulation - Physics - Character | 
|---|---|
| Affects Versions | 4.25 | 
| Created | Mar 3, 2020 | 
|---|---|
| Resolved | Jul 19, 2022 | 
| Updated | Jul 19, 2022 |