Try this:-

Open the saved figure CR2 file in a text editor.

Near the top you will see the path to the OBJ file that it uses. This will not be your original file but one created by Poser. It will probably be in the same folder as the CR2 file.

Open that OBJ file in UV Mapper

Select by group.
What group names do you see?
Do they exactly match the internal body part names found in the CR2 file?