I see how to merge two or more subtools into one subtool. How can I then unmerge that one subtool and get back the individual mesh subtools that I originally had???
In the Tool>SubTool sub-palette there is a Split section, giving various options. The merged model should have different polygroups based on either the original polygroups or the individual subtools. You can Shift+Ctrl+click on a polygroup to hide all the other polygroups. You can then press Tool>SubTool>Split Hidden to create a new subtool of the hidden parts. You’d then repeat the process to get you subtools back. (Note this is easier if there is one polygroup per subtool!)
Awesome, thx!