In past flights on UA in the early morning, I've always seen the flight to PHL parked at N10.
Well, the past few days I've noticed it leaves from A3 now, and I just printed my boarding pass for #782 tomorrow to PHL, and sure enough, it shows A3.
Is this because of the HP/US merger? UA and US are Star Alliance partners, which is why US moved over to N in the first place. When did this move take place?