Obj groups importing into Zbrush

Binxx

Well I ended up getting this model from my teacher which had its uv's already precut. However the model is in piece's and i was wondering if there was a way to edit all the pieces without touching the UV's or altering them too much so i wouldn't need to retopoligize everything (Looking at the image below, when I edit the z brush file it makes cracks). I'm not sure, however but i think this could be solved by importing in some way possibly? Hopefully you guys could help! Thank you!

PolyHertz

Why not just weld all the geometry elements together at the seams in Maya? That wont harm the UV shells, and assuming the shell borders are the same as the geometry borders you could simply export from zbrush based on uv-polgroups to get the original breaks if need be.