cino2go as far as I know, Qantas is not yet recruiting for short or long haul positions in Sydney. That makes it a bit difficult to give "preference" to ex-Ansett people. If you had applied to Impulse, Eastern or even Australian you would have discovered that in fact ex-Ansett WERE given preference, as they were granted an interview, which a large percentage of applicants do not even receive!
To my knowledge, the only people working for QF as FAs that are ex-AN are a few that were doing the AWAS contract, and others who are on a casual basis through MAM.
If and when QF do recruit, they have guaranteed preference to ex-AN staff. Perhaps until then you should not limit yourself to QF and explore some of the other options available.
All the best
SG