No longer have access to ODST in MCC

Hello. I seem to be having trouble accessing the ODST campaign after the newest MCC update. I played MCC since the day it came out and have had access to ODST until this newest update. When I go to manage games it no longer even appears in there and when I go to the store it prompts me to purchase it. I have already contacted microsoft support and they told me they couldn’t even find it in my purchase history. They requested that I make a post here to see if there’s anyone who can help me resolve this issue. Thank you.

Well you clearly played it according to your service record.

Since you say you got MCC on release does that mean you got ODST as the mea culpa (for free) from 343i for the release issues?

Yes, I received it for free from an Xbox Live message when it was available at that time.