LASO Playlist Issue - Like A Fine Wine Glitch

So the “Like A Fine Wine” didn’t unlock for me last night when I finally completed LASO. As of now it still says 10/10 and resume on Truth & Reconciliation.

I started LASO quite a while back. First I was the host and we played over Xbox LIVE, completing the first two levels. Then after numerous frustrating disconnects on T&R, we waited for more patches to cause that not to happen. Recently we started again, and after a 5 hour game disconnect we decided it wouldn’t be possible.

Then we decided to play split screen. We haven’t had a single crash during our time playing it. We finished the rest of the game in two weekends. He was the 1st player and we played on his console for levels 3-7. Then we played on my console, him still 1st player (since my resume still said Truth & Reconciliation). We finished levels 8-10 and he unlocked the achievement, but not me.

I already viewed the playlist again, as people have said that makes it unlock for the co-op partner. But that didn’t work for me. I tried many times and restarting the console and making sure I’m the only one signed in. I don’t want to click resume and have my progress destroyed. This needs to be fixed. Why doesn’t the achievement just unlock when it says 10/10? Why does my resume still say T&R?

Deleting the game including ODST, deleting my local save, and then reinstalling the game, but not ODST, and then viewing the LASO playlist unlocked it for me.