I got confused when you mentioned Project Human, but now I see it was Makehuman things are a little clearer... If I've followed you correctly, then UVS files may be the way to do what you want. Open your grouped OBJ file in UVMapper, and export a UVS file - be sure to select the option to export group information. Then open one of the other OBJs, and import that UVS. Assuming the mesh structure is the same, it will transfer the grouping (and the UV mapping) from the first model to the second.

It may not matter much if you have things sorted out now, but could be worth a try the next time this comes up?