Originally Posted by
Dave Noble
BA is only obligated to take the passenger regardless of booking class availability at earliest opportunity
Beyond that, there is entitlement to rebook later, but only subject to availability. This means that it is irrelevent for an award booking, since award bookings are flexible anyway. For a business award booking, it would be subject to 'U' class availability. If 'U' class is available, then it is a standard change that would be available anyway
I think you are attempting to put a restriction on the Regulation that does not exist. The Regulation says “subject to the availability of seats”; there is nothing implied to suggest the new reservation must be in the same fare class.