Note-Also posted on QF board as to solicit as many opinions/advice as possible.

I have claimed a 280,000 mile Oneworld award from American that includes numerous QF segments. I am an AA Executive Platinum which equals Oneworld Emerald.
QF called me directly today to advise that 2 of my flights aboard 737-300s from MEL to ASP and back have been downgraded and will not have a 2 class service but rather just economy. The flight from ASP to AYQ still have business. Too bad the downgrade was not on those short sectors.

Where I was previously confirmed with a ticket issued in U (business award) class I now have to fly economy on these sectors.

While not the end of the world, I would like to know if QF will (or is obligated) to put me on a flight from MEL to AYQ via SYD. The flights still have J (revenue business) but no U seats. This would be necessary round-trip.

AA says it is up to QF.

Any suggestions/comments?