2 possible reasons: 1. The trans maps have not imported with the obj files, so you will have to import them in material editor. 2. Vue uses transparency maps that are the opposite to those used in Poser/DAZ Studio. So black in Vue = 100% opaque, white = 100% transparent. Use negative switch (square at top right of map image in transparency function editor) to change. Not certain if this is the problem, but may be worth looking at.

Jane