Just thought I'd give a clap to VFF...
In December, I made quite a number of bookings for travel during this DSC offer period, to take full advantage of the DSC offer. I noted with great interest the VFF-Rep's posting about whether changes to bookings which remained within the eligible travel period would affect the receipt of DSC. I have had to make some changes to flights, and always waited with some scepticism as to whether the DSCs would automatically come through. Without fail, I have had no problems at all. I haven't had to chase up any SCs... they have always come through without any issue.
I've made changes to the days I've been travelling, used upgrades, both complimentary and points-upgrades, cancelled upgrades, and various other change combinations, and have never had a problem.
Well done Velocity Frequent Flyer and
Virgin Australia. Glad to know that you can make an offer, promise something to your customer, and deliver without any further hassle to the customer.