Originally Posted by
iahphx
That said, I see in the ConnectMiles online summary mention of upgrade certificates that can also be used on UA -- and that Presidential Platinum members get 6 SYSTEMWIDE upgrades. Alas, these are apparently limited to certain fares, which I'm guessing would make them not terribly useful to me. Does anyone know the details?
The 6 SWUs can be used on any UA flight booked in W class or higher. This is the same fare class that UA requires to use SWUs on (most of) their international flights. Each SWU is good for a single segment only.