Hi, I’ve been searching for the answer to this, but cant seem to find it.
I have a retopologized and UV’d mesh that I am using to Project the detail from my high res model onto.
My problem is, after I’ve set both meshes up over a zsphere and projected the detail and made the skin, I loose all my poly groups.
Am I just tired and arnt seeing something obvious?
please help me 
Thanks.