i made face in Nurbs, then change to poly to attach, then changed to Sub-d using poly-proxy to sculpt.

i refined nostrils and lips, then gave detail.

now.. when i try going to poly-proxy mode.. it messes up that upper lip! everything else is ok though..

i deleted all history, but i can't get it to be normal again for me to use poly-proxy mode again. When i change to polygon.. it looks alright though...

would any one teach me how to fix this? or at least teach me what is causing this? Thank you.