This may be a consequence of the way the morphs are being named. I don't have Morphing Clothes, but if there's an option to give the new morphs in the clothes the same name (not necessarily the same as the label you see in the Parameter palette, unfortunately) as those in the figure that's what you want. Otherwise you need to work out whaty names are being applied to the new morphs and to the figure morphs and then use a text editor to rename the new morphs to match the figure's.