This is frankly a bit of a guess but I think they’d still be remedy slots so the new buyer of flybe2 would have to use them for their intended purpose. It would be interesting watching LH or KL/AF trying to use some of them for UK domestic competition. They would presumably have to keep a UK AOC holder for that purpose (Flybe 3 ?). Hopefully someone who knows the score will be along to comment here in due course.