Skeletal mesh UV lost after export and re-import?!

Skeletal mesh UV lost after export and re-import?!

I have a character that I want to edit using 3ds max but when I export the Skeletal mesh and re-import it even without editing it in 3ds max the UVs are lost and shown as solid color?? What is the problem??
I tested the texture in 3ds max it shows fine but also when exported back to unreal engine it is lost.

Original

Export

Imported

Exported skeletal mesh as FBX 2018 unticked everything and reimported it and accepted materials again.