I don't change anything in the MM, even when I did it really didn't seem to carry over to CFM anyway.
I thought of resetting them before each game and re-entering them as I have them now.
Last 2 games the sliders were reset b/c I was testing out AM. So the game loaded with the sliders being newly setup before each game.
I do think your safe if you don't adjust something after setting them up. If your going to change something, reset them 1st and then re-enter the new values.