Anyone having problems with seating on Air Belgium - it's an aircraft type that BA does not have under its own assets - then contact centre agents are able to assist - their software is working OK for this. In particular if you have paid for seating when it was fully BA and you are now in some random seat which you would not have chosen for yourself, just call up and it can be resolved. In recent weeks BA cut back on sales for these flights and so normally there will be seating options available, there aren't many full flights.