Originally Posted by
old,not bold
But I guess we can put that down to understandable confusion in difficult circumstances, and just ignore it.
Just bear in mind that this is not a voucher in the normal sense - it is really just a credit note to the value of your previous flights. You should find the the 'voucher' number is the same as the original e-ticket number. Keep those emails safe and keep copies of the original booking confirmation for when you come to rebook. There is rumour of these being usable for online bookings but at the moment they can only be used on the phone.
BA's IT is notoriously fickle - we have had flights cancelled, which still appear in my bookings, and even flights which have been cancelled, and where we've had the refunds, and yet still get the pre-flight emails and even been invited to check-in - for non-existent flights!