AAJetMan, I would try again to get original routing credit if I were you. I had the same thing happen on the same flights (flying FRA-ORD-SEA-DFW) on 2/24 and ORD-SEA flight was delayed so that I would miss the SEA-DFW flight. They put me on the direct ORD-DFW flight. I emailed Customer Service and requested original routing credit and it was GRANTED (tho they gave the standard line of "a one time exception). Miles posted within 24 hours.