22. Inability to change colours (sometimes) with imported figures/props

A figure created in P6 performs well when opened in P7. However, the same figure if imported into Poser 7 doesn't. I now have a scene with a figure with two black shoes and an identical figure imported into the same scene having one black shoe and one purple shoe. Worst of all, Poser 7 won't let me change these colours. The problem only seems to occur (so far) with props .