I find it interesting that you chose to go with PP2010 instead of Poser 8, Silke... when you look at the feature difference, GC and Collada support stand out as key PP2010 components missing in Poser 8.
The above image was rendered with GC set at 2.2 for all colours, but any masks, bump maps, specular maps etc have GC set to 1. No, it's not great (very much a WIP), but I was able to do this with IDL - apparently IDL and GC are linked. You might want to have a read of threads on here regarding IDL. Mind you, if you don't want to use IDL, you should be right.
But then, it's even more baffling why you decided to upgrade to 2010. The library?

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks