Yes, the resulting prop is a full figure mesh. All that Zwrap does is move the vertices of the imported Poser base mesh in Zbrush to conform with the topology of the target; it does not add new topology any more than using Zbrush's move tools or brushes. I'm thinking that this may be a bug in Poser's implementation of GoZ. I may have to look into exporting the modified model as an obj file as you suggested earlier and do it the way Poser morphs were made with Zbrush before GoZ came around.