So I redeemed the points and call BE to get the upgrade for my wife on our return flight from Nassau to DFW. The BE agent told me it was done, however, after I got to the front desk at the airport in NAS the agent there told me there was nothing left (even though I was told it was confirmed). So, do Aadvantage upgrades/EXP upgrades have precedence over a BXP1 upgrade? I guess I'm gonna have to try to use it again in another flight...