Hello! I based my suggestion on the following: once a material block is in a library file, it stays until you delete it manually. P3 Fem has materials like shoelaces or something. Things that came from using the CasualFem figure or something. They go to the bottom of the stack - but they will never go away unless you make them. So all you need do is add this as a new block in the Materials section = material WHATEVER YOU WANT FOR A COMMENT { } in with the others When you save it back to the library in Poser, all the junk between the { } gets filled in and the block goes to the bottom of the list because Poser puts redundant material calls at the bottom, but will not purge them.