Originally Posted by
findark
Data point for display purposes. Flying A-B-C:
A-B is J3 Z0
B-C is J8 Z8
A-B-C is J3 Z1, J8 Z8
The website shows "upgrade available with Global Upgrade certificate". An agent stated that only B-C had confirmable space.
I did not actually apply an RUC to this.
GUC can be used to upgrade as long as J1 is available. (For First Class)