after looking at khrys' V3 no-nostril morph, I can see that it would be impossible
to do that in poser. it would require a skilled 3d user with excellent vertex modelling
skills and a good vertex-modelling app.  fortunately m3's nostril material zone is
selectable, thus allowing various operations to diminish it, even in poser.

daid, the way to apply an obj morph in poser 4 or later is to select the object
in poser, then load morph target, which will allow one to navigate to the obj
that was manipulated, provided said obj has the identical number of vertices
and the identical vertex order that the obj in poser has.  however, distribution
of said morph targets has some restrictions, particularly in regard to daz models.