Originally Posted by Lehava

Glad to see DL is making ths right, but for those thinking this is the OP's fault, I thought I would chime in. I had a similar problem a month or so ago. It is/was happening on "hybrid" tickets. In my case a multi-city ticket booked via NWA. My first two cities were on NW metal and I did fine. When I went to fly the final segment (ATL-MSP) and went to check in the ticket supposedly did not exist. It took me nearly an hour of persistence to get the TA at Atlanta (I went to the small remaining NWA ticket counter instead of the DL ones merely because of who I booked through) to find the ticket. He kept telling me it didn't exist and I kept pointing out I had already flow parts of it.

He had to dig VERY deep to find the ticket, it appears that when you have a ticket that starts on one airline and then finishes on another the system thinks you blew off the first flights and cancels the ticket the sames as if you are a no show on your first segment.

Because of all this I wasnt on the upgrade list ahead of time either and ended up back in 38B!

The great irony of my adventure that day, was that I ended up on the same flight as Jeff Robertson and Bob Soukup (Bob was my seat mate). So I had some immediate feedback to DL/NW on the day *grin*

I can say that my more recent trips have been more stable and I have been able to do OLCI on the hybrids again (still having some problems getting on the upgrade list right).