I would agree with comments about not worrying if UA.com shows the itinerary incorrectly - I had the same with an SN itinerary that I upgraded from Y to PE.

For the Swiss (LX) upgrades, you might want to check out these threads:

SWISS Upgrade Bargain (Bid or email invite to upgrade)
Longhaul cash upgrades to LH E/C/F [upto 6 weeks in advance] - You'll have to search for LX data points
MyOffer Plusgrade [bidding for paid upgrade to PE, C & F] - Again, you may need to search for LX data points