I see what you're trying to do but I do it a bit different and I don't model so I can't offer anything there!
Anyway the way I do it is:
Set up my scene in Poser, take it into Vue as a pz3, set up lighting, atmos etc. to how I want. If I see something I could add from Poser then I'll open the pz3 in Poser and add it in there and re-save it. This then prompts Vue to ask if I want to re-load the pz3 because it's changed, so I say yes and the whole scene comes in again with the new bits, but in the same position!!
I find this the easiest way for me, I don't suppose it would do for others though!

Sorry if that's not what you were on about!!

Injustice will be avenged.
Cofiwch Dryweryn.