Well, let's have a think about this shall we?
It's really totally impossible for a professional crew to depart A for B with burn off fuel only, if all the checks are done correctly!
There are numerous checks and double checks to ensure an airplane doesn't run out of fuel between A and B!
And the reason for this is that if an airplane does run out of fuel en route, all the poor sods down the back, as well as the crew, are probably going to die!
This is not a good thing!
This thread has to be wrong, in respect to a professional Capt and First Officer, as well as a Lame, as well as a load controller, as well as a refueler and a few other people, not picking up the lack of "normal fuel" for a flight from A to B.
This nonsence, from some uninformed people that "we all make mistakes" and that we are all "human" is just that.
Nonsence!
If you believe that, go get another job, like selling used cars. Aviation can do without the likes of you!
If, however, I am wrong and and the aircraft did depart with burn off fuel only, then all I can say is, God Help Us All, don't ever fly with Qantas!!!