Halo Legendary Campaign bug

So i,ve completed the first 5 missions on Legendary and got the gamerpoint for them yet they have not been recorded in my Commendations. Is this happening to anyone else?

What makes even less sense is my mission list says that i have not completed Dawn or Requiem at all, which makes no sense because surely I wouldn’t be able to access the later missions without having completed the first 2. So it looks like im going to have to replay them.

Any advice as to how to get my commendations to work would be awesome

Thanks