I've wiped every file for GalCivIII off my system, done a complete uninstall, and reinstalled. I made sure to clear out EVERY file I could locate (Did a search on my C drive for anything with "Gal" in it). Now, when I make changes to:
StarSystemDefs.xml, PlanetDefs.xml, and PlanetTraitDefs.xml
They simply aren't reflected in the game. I've changed the files in both the main GalCivIII directories AND the Crusade directories. It's literally like I haven't changed anything when I start the game.