Originally Posted by
lydiamight
An update for those kind enough to respond to my original enquiry----Phoned BA and the Customer Services Associate tried to book an Upper Deck seat for me manually but was unable to do so as his computer said "seat map unavailable" He suggested that I keep checking to see if it opened up or try to book it when I check in at MIA
Something is very odd there since the seat map is clearly available. There aren’t any other issues with your booking such as changed awaiting reticketing? Or booked on codeshares?