Hello community! 
I'm new to character creator  although I'm getting comfortable with the goz process, I would love some help please.

I would like to sculpt on a custom posed character I sent to Zbrush and move that sculpted information back to the T-pose, which I then would relink into Character Creator. Zbrush has this function through an export import method, which works as long as the posed mesh and the t-pose mesh have identical vertices. Here is a link to a video of the process id like to use with CC3+ models. 

I can't tell why the custom posed mesh and T-pose mesh from Character Creator don't support this function in Zbrush. I would be Grateful for any help on the matter . 

thankyou!