I went to the UA website to check a reservation that I had booked for myself, my wife and our baby through a travel agent about a month ago. (Long story, but it was a complicated fare setup that I couldn't book directly through UA) Surprise surprise -- one of the flight numbers had changed, and our previously "confirmed" seat assignments and bassinet request were magically missing.

I emailed the TA asking if they could confirm, and they sent me a link to their system's confirmation page, which still shows the old flight number. Hmmmm....

Tempted to call UA to work this out, but their call centers are overloaded due to the weather issues in Japan today.