OK, there are TWO versions of this game. If you have a REPEATABLE problem or a repeatable option not working then I need more info:
1) what version of the game do you have? (Legit ORIGIN version or other or some other version and the version number from the .exe properties) 2) i need a savegame with instructions on which Save it is, where it goes on your computer, and what is wrong and how to repeat your problem.
Also note, to lock in stats, a good place and time to do it is right at the beginning of a new story/load/ or section. Upgrade and then save.
if I don't have 1 or 2 then I cannot help you. If you are using a 'modified' version of the game (i.e. non-original) then the game itself might have some issues.