I've been using VW 12 for several months and found its DWG conversion much better than VW11.
On my current project, I'm having trouble with objects moving during the import. The reflected ceiling plan (RCP) keeps the ceiling grid in the right place, but the vents, lights, etc. have been off-set. I can open the original DWG file and see the original locations.
What confuses me the most is the offset is random. One room may be shifted 8" down and 1" to the right, while the room next door is 1" to the left. And the rooms without the ceiling grid are fine!
Snap to Loci is off in Preferences.
Any suggestions for converting this easily? I need my supports to be accurately located, and (of course) they want the shop drawings tomorrow.