go visit Ockham's Poser Python Bungalow HERE  -- He's got a whole bunch of things that do that kind of thing... it is also a good resource to look in Rendo's freebies for Scripts there are other's that have free scripts up on the WWW... a quick look on Google will find others...

The parser library is probably overkill (though if you already have C++ programming skills then it's no big deal...)

A script whether internal of external to Poser is better than manually doing things... for example I just spent several hours converting RDNA's V3 skin tone shader PZ2s for use with BVH's Angela 3... It would have gone a lot faster with a script but I only convert these pz2 one in a long while (the last time was for TY2 a couple of years ago).

Parsing is a good idea though... A while ago I hacked together a "expression cleaner" script to remove "face morph"  settings  and leave only the actual face expression but it was not a "safe" implementation. It expected to find a particular thing on a specific line of the fc2 file if it did not it trashed  the resulting fc2)...

 

If you're not familiar with Python and Poser Python I'd suggest getting PhilC's Poser Python e-book...

Good luck!