Oh also watch the material that you are using in Z, once back into maya it will look different as the Zmaterials properties wont be there.
I painted my Burns in Z, the following pics in the WIP thread may help out.
https://srv01.simply3dworld.com/showt...5&pagenumber=5
Check out your map with the flat colour to see any problem areas where the skin may be not quite there and the zskin is masking it.
Are you going for SSS in maya with it?
"No pressure, no diamonds" Thomas Carlyle