So I'm trying to make a very simple mod wherein only the Julii are playable among the roman factions and they only have access to a few cities (I was thinking Rome, Arretium, and Capua) just so I can have one unified red roman faction.

Anyway, I'm aware that, theoretically, all I should need to do is make the appropriate changes to the descr_strat.txt file in my mod's data folder and all that, but no matter what I seem to do none of the changes I make take effect ingame, even though the launcher for the game seems to recognize the mod as - at the very least - existing in some form or another.

EDIT:
I should point out, too, that what I'm attempting to do actually works fine if I copy-paste the modified descr_strat file directly into where the vanilla version is supposed to be, but not if it's in the mod folder.