I don’t know if this is a ZBrush issue or Maya issue.
I made models in ZBrush, did UV layout in Maya, and tried to re-import into ZBrush, but then the UV morph shows all the polygons as separate.
This is from the May UTE. It shows that the edges are not aligned or something and the edges wont sew together properly. When I first did the UV layout it didn’t look like this, but I re-imported the mesh from ZBrush and it changed.