Vue will re-import geometry after you change them, but only from Object files, (OBj, 3ds, etc).  Also I import poser as single meshs.  It sems to cut down on memory use.  It works fine.

Trepz, I can't see what you are doing that's any difference from me.  I haven't had any use for the Poser Shader Tree, though so haven't tried that.    

Just a thought, when you load the PZ3 file after the import screen a second screen should appear.  It asks if you want to disable Poser reposing.  The answer is No.  Did you see that screen?  It's like a test on a Federal Exam, no really means yes (you want to use Poser).