Hi allSo… I’ve 4 J return flights booked LHR to MIA next year, using 2 Amex 241s. Peak dates, paid 300,000 Avios plus about £850 each in tax (£3,400 total taxes for the 4 of us)

If booking today under new more flexible deal it would be 400,000 Avios plus £1,800 taxes (£450 each)

No brainier to change isn’t it?….but do I have to risk cancelling and rebooking or if I phone BA should they be able to amend the booking and allow me to use 100,000 more Avios and refund c£1,600 of the taxes?

Ta much in advance