Moderator: Hilton Honors, Practical Travel Safety Issues, Information Desk & San Francisco
Join Date: Jan 2001
Location: San Francisco CA
Programs: UA, Hilton, Priceline, AirBnB
Posts: 11,314
I was informed by a very helpful UA agent
In downgauges, certain seats"disappear" for the few seconds it takes to load the new seating configuration, and in those few seconds, seats can be assigned according to your MP preferences of aisle/window rather than E+ or -.