Just logged in to see if my return flight posted correctly (a MFU to J) as the outbound flight didn't post until I made a call to BAEC. Well my miles did post along with a little over 7300 miles for a special promotion. Anyone know what this might be for?

Edit: I just calculated it and the miles are exactly double the mileage I earned from the flight itself before the cabin bonus. Still don't remember seeing anything about earning double miles. Thanks