MC Saga breaks, lost 10 hours of progress

Me and my girlfriend have been playing though the MC Saga and I went and played three missions of Me and My Hog. According to the IN GAME text I should then be able to resume from the begining of the current mission.

Nope. Back to mission 1, was at Uprising which is mission 23. Not impressed, want my progress back. I can still resume Me and My Hog after the glitch and replaying mission 1 which just sent us to mission 2. Its ruined that for us, we don`t want to replay 10 hours, expessially considering my girlfriends in it for the story not repeating half of the entire first trilogy.

Help would be nice
thank you
I Killed Brunts

Ive tried hard resets of the console, didnt work.

It’s because if you launch another Selection, it will cancel the previous one.

Hey there, I Kill brunts. The Master Chief Collection only allows you to have one active playlist running for each of the five categories of games (that is, the four games plus the cross-game lists). Changing to a different playlist will wipe the existing progress you had on the Saga one.