Originally Posted by
skywardhunter
I would imagine the auto upgrade works in a per leg basis. Also as both legs might not be upgraded simultaneously as inventory may not open up at the same time exactly. I'd hope that they refund the difference if one calls.
Following up on this, does anyone have a direct experience of what happens in this situation?
I can currently upgrade the shorter of two return segments on a booking - it's the longer one that I want to auto-upgrade. I could upgrade the shorter segment and keep my fingers crossed for the longer one, but the shorter segment alone is a waste of miles.
If no one else has experience of this, I'll report back if/when it happens for me.