...having said that, JCMs are a bit of a different animal... due to the interaction with the deformation of the bones.   For JCMs, you have to wing it a bit and the resulting morph (if viewed on it's own, without the bone deformation applied) many not be completely smooth around the edges (the goal is still the same, it's just a bit trickier to accomplish :) ).

Cinema4D Plugins (Home of Riptide, Riptide Pro, Undertow, Morph Mill, KyamaSlide and I/Ogre plugins) Poser products Freelance Modelling, Poser Rigging, UV-mapping work for hire.