Xeno..look in the regular forums(not the Pro)...look for threads with topics regarding bump maps or just flat out materials. Like Agiel stated procedurals/metals are affected mostly. That said in Poser 5 most items are plugged into the Gradient Bump node..there appearence once imported look fine. Now...in P5 those maps SHOULD be plugged into the REAL bump node. If you do this & then import....let's just say, you'll need to make some slight adjustments, it was much worse about 2 upgrades back, but looks much better now :)