Pack File Manager changes not taking effect

[A_B]

Why is it, that some changes made in Pack File Manager don't actually take effect in-game?

I'm trying to raise the level of building needed to recruit Cohorts in the Imperator Augustus campaign (currently available at the basic barracks level). I make changes in the PFM to 'Rome_building_units_allowed', save it, no errors reported, but nothing in game changes.

This is in the DEI mod.

PFM changes DO work in other files, such as the Main Unit Tables, no problem.

Frustrating that some changes take effect, and others don't, for no reason I can ascertain.

I do have most up to date Schema files for PFM.

[Sabhotep]

Delete the user script in %appdata%\CA\Rome\scripts, turn all other .packs off and edit one thing at a time watching if anything changes.