Okay, wow thanks but I'm lost.
Just to clarify... I only want a head. IOW, I'm not trying to create, in any way, a complete figure. 
It works fine for me to just have a head on it's own, and just get rid of the head of any figure that I stick the custom head on.  Does this nullify what you are trying to show me?

So, essentially I'm trying to make a head prop with morphs into a standalone figure, and obtain a cr2 that works in Mimic...maybe I'm totally wrong in my expectation? Maybe I need to go the route of creating a whole new complete figure before it will work in Mimic? 
thanks!