Ah, I see what you're driving at there - sorry for any confusion. Yes, goodness knows how it will actually appear in statements and transaction history.

For anyone relying on flights in the last days of March to get them over a threshold, I would not be surprised to see many frustrating phone calls in your future. But who knows, maybe the IT will just work - if they'd delayed it to 01/04/26 it would have been so much simpler, as well as avoiding much of the understandable anger at the goalposts being shifted mid-match.