How are you bringing G2F into a scene? Are you using the DSON importer or hacked CR2? Either way, you wouldn't use a companion file with a exported CR2; I don't think they are referring to the same item and the CR2 would not match the rigging of G2F if you used the importer to load the figure and conformed a CR2 of shoes you exported from DS. I think you would use the importer to load the shoes then save them back as a CR2 (with some edits, but I'm not sure Poser 9 would be able to do the weightmapped aspects of the rigging)