I'm unfortunately a lowly 1P now; sorry, I hadn't had time to go in and update my profile. I'm getting the Indian CSRs.
I just now managed to convince one of them I can fly in F, but he now insists the flights are "cancelled," although .bomb is still selling them and they're still showing OK on the flight status page (well: edited to add, they're still selling the seats, but the status page DOES now show it as cancelled, so maybe I'm being a bit harsh on the 1P CSR.

)
*sigh*
I had full availability in Y earlier on the same flights, but the GA tried to claim I couldn't route ORD-DEN-IAD, as "that is two one-way tickets and an illegal route." I tried to explain that we were in irregular ops and thus anything went, but she refused. By the time I got another agent to look, only F was left, and THAT agent claimed I couldn't fly in F.
Now, even F is gone on everything except the DEN flights, and those are now cancelled. C'est la vie.