Originally Posted by jsgoldbe
I can confirm, I recently booked thru USAirways.com (lower fare than UA.bomb for same US metal flights) and they specifically say that you have to call in to get non-US FF# entered.

One of many things that still need to be fixed post-merger.
I just reserved my flights online and the US web site would not let me use the UA-FF #. Bummer.
Let's see how long it takes US to address this issue.