Originally Posted by mysticalice

Hello
1K member here, but still figuring out the way partner airlines work when it comes to using status/miles/PlusPoints on them.
For example - i need to change an existing flight segment via United, but it's going to mean flying one of the international legs on a Luftansa flight. That means i don't get visibility to seat map during booking. can I go to Lufthansa and pick a seat there with the lufthansa confirmation it gives me? will it make me pay extra to do it? will i be eligible for upgrades based on my star gold or United 1k?

Sorry for the questions. i understand the PQP and PQF awards and how that will work, but this part i have no idea

ALSO, not sure if this counts for anything, and a little off topic, but the current flight on United that i have to change, has me in premium economy. will that transfer to the lufthansa flight or will i be in regular eco?