Try turning the part dial, not the full-body dial, that always works. Of course you have to turn them all, and all the same amount. Poser can get confused many times on who is in charge, Full Body Morphs are supposed to be run by the figure itself, but sometimes another figure or even the clothing can take them over, in effect lock them. The only way I know to fix this is start over, and restart Poser before you do anything, then always open the figure first, then clothing, if there is only one figure in the scene. If there is more than one try the Null loader, but that doesn't always work for me either.