I'm sorry I wasn't more clear Lyne.  I think you accidently advanced to a frame other than the first frame (little slider beneath the pose window) in Poser before you posed your character.  The result of this is when you import your pz3 into Vue and select import single frame and leave it set to frame 0 (default) in the frame to import box... your character will come in with no morphs applied.  What I was suggesting is to set the frame to import to frame 30 in Vue as this frame would almost certainly be beyond the frame you had set in Poser when you applied your morphs and so the character will import with all its morphs applied.

I hope this makes sense.