I'm doing a short segment (DEN-LAX) in C on a 744 in a couple of weeks, so didn't bother with row 15. Instead res gave me 12B. When I look at the seat plan on the ua web site, there is no 12AB; the first row on the port side upstairs is 13. Obviously something has changed
(and I note there is a 12AB on the res web site seat map display). Anyone know what changed and how?