Originally Posted by
BlondeBomber
that's right--all eupgrades on the itinerary going one way should be from one eupgrade account
For returns, others have success in using eupgrades from a different account AFTER the outbound is flown (but still all from one account, not shared between accounts).
I think everyone has success, as long as they push hard enough.... every time we've done this it has worked out fine.
Some outbound flights clear right upon landing. Some seem to get stuck for a while longer in the online itinerary. I've seen one get stuck for 2 more days... Once they disappear from the online itinerary, you're good to upgrade.
If they don't disappear on their own, apparently one can call in and get them cleared out manually, and then the upgrade works. I've prepared for a call-in, in the past, but never done this since those flights cleared.