Help with transferring UV map on the same object

Hi. You exported and re-imported the mesh, so most of the important information was lost, this is the reason why the uv map is named that way.

A few clarifications:
Weights are controlled with vertex groups, not uv maps. Once you transfer, clean and limit them, you're done. Very rarely do you need to edit them manually.
An object looks hot pink because blender cannot locate a texture linked in the material. You can ignore it.
The first uv map in the list controls how textures are projected on the surface of an object, the second one controls morphing ( right now this information is lost, so you will have to transfer this as well ).
Another thing responsible for morphing is vertex paint and it was also lost as well.
Almost all cas items share the same uv space, split into designated areas. Your garment is a top, so its uvs in uv_0 should be in the space meant for tops only, otherwise it will conflict with bottoms. You need to re-arrange uvs and textures.


You should do this task fully in Blender, otherwise you're just adding yourself more things to do. Check out a tutorial on frankenmeshing clothing for ts4, its not more difficult in blender than anywhere else