Autofit to Genesis works until I save and close file -- when reopened, autofit doesn't work

ModernWizard

Hi all -- can someone help me with a solution here? I am autofitting the V4 Creature Creator legs to my Genesis character and having trouble. If I load a new instance of the legs and run autofit on them as a tight bodysuit, they will conform and run through poses without a problem. I then save and close the file.

Upon reopening, the legs conform to the general profile of the morphed Genesis, but they have a bloated fit. In other words, they have lost their close fit. The egregious poke-through won't go away, even if I unfit/unparent the legs, then refit them. Does anyone have a workaround? Or is this just a problem only solved by upgrading all my Creature Creator stuff to G2F?

Thanks.

--MW