I could really use some insight! I'm trying to book an American Airlines flight through British Airways so I can use my AmEx MR points. However, no AA flights are showing on British Airway's website, even though there are dozens on AA's website. I tried Qantas and ANA with the same result.

The flight for reference: ILM to BTR, round trip, Sep-21 to Sep-25.

Any insight is greatly appreciated!