That I'd have to research...

What I will say in this regard is that anything that isn't a Poser specific file (.pp2, .cr2, .hr2, etc, etc) won't be found in any of my runtime library folders as they are promptly trashed upon discovery... At no consequence whatsoever. I'm also a Mac user.

I place all of my files manually and have for years, so I've developed a familiarity with the file and folder structures within poser. Using Poser 8 also, BTW.