Hi, I was trying to look for a Qantas classic award flight from Hong Kong to Melbourne in Dec 2019. Not sure why, but I could see ONLY economy seats available for the whole Dec 2019. I could see Business and Premium Economy seats available in earlier months. I wonder if the upper flight classes are being made available later than Economy now? I am pretty sure when I checked the same thing last week, I could see lots of Business and Premium Economy seats available for Dec 2019 (but not the right date for me). Also quite sure it is not because they are all fully booked as it is the same when I checked flights from other cities. Does anyone have an idea why?