Earlier this morning I got a Google Flight alerts letting me know that the price of a flight I'm tracking had dropped by $40. With 4 of us on the flight, that made it worth my while to look at repricing. I was a little surprised when I went into my flight, chose Change Flight, saw that the flight I was on was available for selection and it showed the refund amount. I was able to go through the whole flow and get the difference refunded. I did have to select new seats but that's fine. Is this something new, or is it because this particular ticket was booked as Fully Refundable instead of my normal booking of non-refundable flights? I just don't recall ever being able to select the flight that I'm already booked on and getting any difference back (either refunded or as a credit).