Flight cancelled by BA. I paid for that flight using both a FTV (from an earlier flight cancelled by me and which I had orginally paid for in cash) and cash. As this cancellation is by BA, I'm entitled to a full refund. But is the full refund a cash refund comprising the cash I paid most recently together with the cash value of the FTV (which I paid in cash originally), or it is a refund of part cash plus part another FTV?