Is this possible? (Cancellation/refund query)

Hi
Just wondering is this is possible. If you have a 'Q', or otherwise discounted/restricted economy fare, is it possible to pay to have this upgraded to a 'Y' fare, and then cancel, getting the Y (fuplly flexible) fare refunded, losing just the Q change fee?
I ask as I have a Q fare booked for later in the year and there is a small possibility I can't make the trip.
Just wondering if this work-around is possible.
Thanks
Andy
Just wondering is this is possible. If you have a 'Q', or otherwise discounted/restricted economy fare, is it possible to pay to have this upgraded to a 'Y' fare, and then cancel, getting the Y (fuplly flexible) fare refunded, losing just the Q change fee?
I ask as I have a Q fare booked for later in the year and there is a small possibility I can't make the trip.
Just wondering if this work-around is possible.
Thanks
Andy