In ZBrush 2 I often used to work on high poly, then decide I want to bake normal map onto lowest level - it had no UVs, so then I was able to export it, do the UVs in Maya, and import the model back into the current tool at lowest subd level, and I had UVs, ready to bake in ZMapper or wherever. But with ZBrush 3 I've been…