If I Change Return, Does it Affect Priority for Outbound Upgrade?
I'm currently flying IAD-DXB-IAD in Y and waitlisted for upgrades to C in both directions. The outbound looks good with 14 open so don't want to mess with it. The return looks aweful with only 3 open. I can reroute the return over FRA or ZRH and confirm upgrades to IAD. If I rebook the return, will it affect my place in line for the outbound upgrade? Thanks!