ODST not counting towards Elite Company 2 and 3

Me and my friend have been trying to complete this challenge quickly due to how long it takes, and we tried playing Halo 3 ODST to complete the last few missions of it, but never got any more progress than what we had before. I don’t know if it’s not supposed to say ODST can be done to complete this part of the challenge or if the challenge is just bugged.

Hey OP, there was a patch released today that should fix issues with challenges. After you’ve updated, give it a try again and see if it’s fixed