Zbrush Solution, where you Ask and I Answer.
This Video we go over a Method of maintaining your flow of Topology after you Group Split a Low-Res Model and Apply Subdivision to it.
If you like the UI I'm using go to my Gumroad Page to download it.
https://gumroad.com/glenn1993
If you got some Zbrush Questions you want Answered leave them in the Comment section below and Ill see what I can do.