You can also merge groups with UVMapper - just save with the "export as single group" option checked. UVMapper can be used to re-group your mesh, using the UVS import feature; but it can't split the grouped mesh into separate OBJs, you still need Compose (or equivalent) for that, so you may as well do the whole thing with Compose if you're happy with it. "Anybody want a copy if it works?" For me, it depends on what "it" is... :) But somebody somewhere is bound to want it!