Originally Posted by G-CIVC

Everything worked perfectly, the original J sector vanished without a trace on all platforms (so AA and CX and QR/QF etc...). I was able to check in just as usual. What happened was after speaking with the EP desk about 'grab and go', they sent BA (original issuing carrier) a message that says I'm now placed in F on that sector 'because of cabin closure', which was then relied to CX (ticket 'owner' of my DONE). I then called CX to ensure everything was fine and they even sent me a new e ticket again afterwards, so your concern about reissuance may even have gone through in my case (although I'm not 100% sure if they actually reissued it.)