Adding edge loops

#1

I have a UV-mapped ZTL. I want to just slice out some edges with the slice brushes, to aid in rigging, etc., but it complains that there are multiple subdivision levels. If I freeze subdivisions, it quietly deletes UVs. I tried just deleting subdivisions and then re-projecting, but even then the new faces created by the slice tools seem to just have bogus UVs. Adding edge loops works, but that’s about it.

I can export subdiv 1 to Maya and make the edits there easily enough, but then I have to reproject the subdivs from the original, and it’s a massive pain for such a basic thing. (Reprojecting doesn’t seem to recreate the geometry exactly, either, even for parts of the mesh that didn’t change at all.)

How do I slice edges into a subdivided mesh without losing UVs, just interpolating new UVs for new vertices?

#2

I ended up using GoZ into Maya and making the changes there, and ZBrush reprojected correctly when it came back. So much stuff in ZBrush breaks UVs that they feel like an afterthought, which is unfortunate when UVs are the main way to get maps out of ZBrush into just about everything else…