I booked a return ticket in Flexi Saver with 1 year validity for HKD11200 from HKG to LHR via SIN two weeks ago. Last Thursday, when I tried to change the departure flight online, the website said I'll have HKD 1100 refunded. I thought it was some glitches in website as the fare to make new booking the same flight was similar to my booking price. To my suprise I got the refuned amount in my credit card as I checked it today! Does anyone have similar experience or I'm getting lucky?
I only expect airlines to charge you for changing not refund.