moogal - if you don't care about changing the amount of the morph once you've created it, just don't save over the original obj. file.   instead name the file something specific and different (e.g., myv3.obj), and then edit a new character file to point at the new obj file.

if you do want adjustable dials, you need to spawn morph targets for each group, apply them to each group of the original, and (optionally)  making one master dial to control the morph in each group in the "body."   i really don't know much about that process.