Hopefully some can answer this...

I am flying RT from PHX to LGB next Friday 11/28 and return the same day - Meeting a friend for lunch.

Yesterday (8 days out) thinking this was odd, I received an e-mail stating: Complimentary upgrades not available for my two flights. However, these are on CRJ900 AC - I called to confirm with the CP Desk that there was not an AC change and they said no, they still have FC. Today (7 days) no e-mail saying yes or no to the upgrades...

Long story short - The agent said they are going through a system wide update/upgrade and she "thought" these were getting switched over to AA.

So... If that happens and I bought them with US on US flights, would I or would I not get the complimentary upgrade? Just wanted to see if someone might know or had the same experience.