LEVELS.... can't save them, gone with new contracts

I’ve been just manually adding lines and hoping they don’t disappear since I can’t save charts here… but I just noticed… after hours of making levels… chg a contract to a new one all the lines are off now. Like NG went from 3.014 to 3.200 something. Not supposed to do that just chg contracts. I DON"T want to lose my lines again.