I have a flight later today to the US from LHR.

I got upgraded from WT to WT+. My assigned seat for the aircraft type, and on the BA seating map, and on expert flyer is not in WT+ but is in CW. Expert flyer shows my seat number as occupied.

My boarding pass says WT+ but the seat number that is in CW. I am BA Bronze so would usually get Group 3 boarding. My boarding pass says Group 2.

So what is going on? Did I somehow luck out with a double upgrade, or has the aircraft type changed?

Should I keep shtum, or ask the check in lady for a window seat?