Forum:Progress not saving for 2nd player in co-op and/or multiplayer

i am extremley frustrated, me and my brother ran through the whole story mode on our psychos with me being leader and killing the warrior....... a week later we log onto our psychos and hes party leader this time and it puts us back at claptraps boat..... did the same thing with the tiny tinas assault on dragons keep progress with me.... what the fuck please someone help me