Well, it still confuses me. Your explanation is very clear, however, my MED (6.785)doesn't have an options selection anywhere on the menu or toolbar. No Sync skin either. I have a previous mapping that I want to change but I cannot get rid of the old mapping, I can select a single face in MED but all that does is select that face in the old mapping in the skin editor. I think sync skin is what I am missing but there is no options selection and no sync skin.