Originally Posted by choster

That's neither here nor there. The original question is about seat assignments. Upgrades on partners are not and have never been an alliance benefit, nor an aspect of the preceding UA-US partnership, and neither is Economy Plus (for which US Airways has no meaningful equivalent), and I find it hard to believe US Airways would instruct its CSRs not to give seat assignments if a UA frequent flyer number is on a PNR out of some misplaced butthurt.