This isn't a big deal since I just called to remove myself from the upgrade wait list for some upcoming flights, but I found the conversation a bit confusing. Stuff happens, and I'm not upset, but it is strange and doesn't build confidence. I booked SCL-DFW-MIA-DFW-SCL about a week ago for travel next week (over the "conversion weekend" of the 17th), and requested to be placed on the wait list for AA940 & 945 at the time of booking (done in person at an AA CTO). Confirmed. Called a few days ago when I thought I saw EF show open C space. I was wrong, but confirmed on wait list again. Decided last night that I'd rather have the $700 to spend in Miami rather than upgrade, so I called today and was told that I wasn't even on the wait list. Very strange - since I wasn't on the wait list for the international legs, she removed me from the complimentary domestic upgrade list, then put me back on when I realized what she did. So now my priority is as of today rather than my original booking date. Again, I'm not upset, but it's interesting. Is there work being done on the systems already for the integration, or should this be racked up to a simple glitch? Not thrilled to have thought I was waitlisted and to find out I wasn't.