Not sure i this thread is tools to revive, but it's the only one I could find pertaining to miles posting.

I recently flew ORY-LHR-JFK-TPA on paid business class all flights have posted except for the LHR-JFK flight. I can't file for them since it hasn't been 15 days but was wondering if anyone had similar experiences or thoughts on why this happens. Could it have something to do with my boarding pass being issued by BA at ORY? The ORY-LHR segment did post though.

FYI, outbound was TPA-MIA-LHR-ORY in paid F, flight from MIA-LHR was operated by BA and those miles posted the day after the flight. It was AA ticket number and the return to JFK was an AA flight.