I am flying ALB-ATL-MCO and have a Delta SkyMiles Gold Amex. I would like to use the free checked bag perk as well as the expedited boarding on the trip. It appears that to take advantage of this you must buy the ticket w/the AMEX Delta card (done) and make sure your SkyMiles number is in the reservation. This is my problem: I also want to earn credit for at least one segment in AF's flying blue program to prolong my miles for an additional 18 months. Is it possible to use my SkyMiles number when checking in at ALB for the free bag/boarding and later insert my AF number in the record to get mileage for the ATL-MCO segment? Any tips or suggestions would be appreciated.