Quote - I should point out that Smith Micro's models - Alyson, Ryan, Miki3, Miki4, Rex, Roxie - if loaded from the Runtime folder will subdivide in ZBrush without breaking at group seams so there'd be no having to merge grouping.

Yes, but you still can't do normal or displacement maps (to get the details), because there are multiple skin materials on the skin mesh.  Also, if you try to subd just one part of the mesh, ZB merges all the material zones into one (including eyes, etc), so with the current meshes it not possible to just subd the body and not the head.

Paul

Ah. That's a ZBrush thing - it likes single maps - you can auto group by UV and then hide parts before creating displacment and normal maps. That's what I do. Don't need material zones, just the UV's.