When I made the original booking with US Airways, I wanted to add a stopover but there was no availability on the dates I needed it, so I completed a booking without a stopover.
Today, I was randomly searching for availability and found a seat had opened up on the date that would give me the stopover I wanted.
So I called US/AA to make a change and add the stopover, but I was told my ticket had flipped to an AA ticket (001 stock), and because of this, I can no longer add a stopover.
Would I have any chance if I HUCA a few times, or is this some sort of a system-wide restriction the agents just have no control over?