When I split G2 model in zbrush,I broken the model's UV?

in New Users
When I split G2 model in zbrush,I broken the model's UV?
I use Zbrush subtool split the model,I think it's convenient for sculpture.but when I merge them exported back to DAZ it's not a morph any more. How do I solve this promeblem???
Comments
Splitting will have changed the vertex count or order, which makes it impossible to sue as a morph. You can't split, but you can mask or hide areas of the mesh.
I know,Thank you very much!!!