What you really need is the Poser File Editor, one of the absolute best purchases I've made in all my years of Poser-ing...

You would open the figure in the PFE, then create an inj/rem morph for the face as a .pz2... It's hard to get into details, there aren't many, using the PFE it's just that simple...

There are 3 kinds of people in the world. Those that can count, and those that can't..