Quote - I did nothing like that. I just took the original cr2, changed the objects and saved under a new name. Thats it. No Setup room necessary.

Been doing that for years now. It's how I made the full body morphs for UG! and Ben. Import the original OBJ to Zbrush. Create full body morphs. Point Original CR2 to newly morphed OBJ. Of course, that's just half the process. I then had to export MT's for each body part from the new figure and reload them onto the original, but I could have just used the new figure if I didn't want to distribute the FBM's to others.