Can you extend a BA GUF2 by cancelling a booking for a voucher?

[FlightDoctor]

Hi. I have a GUF2 that expires late Jan. Is there any way to (similar with companion vouchers) do a cheap booking domestically, cancel to get the FTV and then effectively extend the GUF’s validity?

[Clem Fandango]

+1 to the question : I’m in the same position (my GUF2 has a couple more months of validity though).

[tiriavpo]

Yes, same principle. This was recommended to me as well by an agent.

[Clem Fandango]

Thanks @tiriavpo.