As someone else mentioned in a post about a year ago, with a much older version, the Light Tank is getting tons of promotions in my game. Say 19 extraneous promotions, assuming the Blitz promotion is supposed to be there. Many of them are not even applicable to its unitcombat type.
I have no idea why this would be the case - the XML for the unit (in ModernEra_4VD_Land_CIV4UnitInfos.xml) doesn't list any but Blitz, but then again the XML is some screwy format that has two separate UnitInfo entries for units. (Which seem ridiculous - why not just put the new stuff in the second one into the first UnitInfo? Keeping all the info for a unit in one place would be vastly superior.)
So did anybody ever figure out why this happens and how to fix it?
Edit: By the way, these are all listed for it in the Civilopedia too.