That's it. The .obj file is referenced in two places in the .cr2 so be sure to change both. From what you described though, if I understood correctly, you may have problems if you actually "exported" the figure as a wavefront .obj from Poser rather than using the .obj file in the /Geometry folder. (I'm not a figure builder, but has something to do with losing the joint parameters or hierarchy or somthin'.)