Originally Posted by Microwave

I bought my ticket through Egencia, it was LHR-IAH-SEA and back the same way, and it ended up being a bulk fare booked into A. As it happens, it's a bulk fare—lucky me. Normally I wouldn't book through Houston when trying to upgrade, but those flights were the only ones on the dates I needed with A inventory (everything else was booking into O for insanely high prices). Tomorrow I am returning to London, and of course the IAH-LHR is looking like an impossible upgrade at this point, so I was hoping to change to another flight into London with a better chance to upgrade, though of course the agent said that bulk fares are ineligible for SDC.

I found a 5 year old post in the archive indicating that bulk fares were ineligible for SDC, and wanted to confirm whether this is still the case. In addition, I wanted to ask if anyone has any experience with making same-day changes via OLCI (as opposed to calling), as sometimes it's possible to make changes online that cannot be done over the phone. When I tried to do it myself, it was looking for flights with PZ inventory since my SEA-IAH upgrade has already cleared—I am asking this specific question as if putting myself back into B would allow the online system to let me do a SDC, I would gladly call and ask the upgrade to be reversed, though if there's no hope I'd prefer to stay up front for that flight at least. TIA for the advice!