If you look up at my first reply, I mentioned that the models will blow up if you don't have smooth polygons off.  I did have smooth polygons off in the images without split vertices. See image attached of what the model, before splittling vertices, looks like with smoothing on. I turned smoothing back on hoping to get rid of the edges in center of the hole in Poser 5 after splitting vertices with the free version of UV Mapper, but that didn't help.