I'm on my third attempt to ticket SFO-ICN-PVG-XIY-ICN-SFO on UA/OZ/CA/ZH/UA respectively.

The first time, I was asked to wait 24 hours, but by 20 hours, the CA and ZH segments had vanished from the record. After calling in, the next agent tried again, but this time ZH (but not CA) was the problem. Waiting on the third go-around, and the agent suggested that if it didn't work this time, I should just buy PVG-XIY-ICN separately.

Has anyone had any success ticketing on ZH before? Any advice? Thanks in advance!

[looking forward to trying OZ, CA and ZH!]