You shouldmn't need to delete your Poser lights because Vue doesn't see them anyway, I've never had to do this!
What I do is set up the scene in Poser [6 or 7] with just the default 3 lights showing, then import straight into Vue!

As for problems with imports, the only ones I've had problems with have been sorted by running the "uncompress" python script inside Poser before saving the pz3 but evenn then I only do that after installing new stuff!
I do know of others that have different issues that they have their work arounds for!!

Injustice will be avenged.
Cofiwch Dryweryn.