(legendary) completion of game broken

Hey Halowaypoint,

I’ve just finished my solo legendary play through of REach on PC via the XBOX Beta app (I have both game pass, and own the game), and while I had a blast I just noticed 4 levels never registered as having been completed on legendary.
Now I don’t mind redoing stuff, but I do very much mind if it’s 4 levels: Nightfall, Long Night of Solace, Exodus, and the Pillar of Autumn.

Anyone have a clue what to do, shouldn’t I have paused the game for example, or was it because some parts I ran through without killing anything?
Whatever clue or tip you can share, please let me know!

Cheers~