Update for anyone trying to book in the future: I was able to secure 1 business class seat and 1 economy in mid-October. Despite ExpertFlyer showing availability, no agents were able to find award availability in business. I tried every trick that exists on the travel forums/blogs with no luck. I called the US call center, AU/NZ call center and never had any luck. Earlier this week, I was able to secure the other business class seat via AA.com! Once the seat showed up on AA.com, I then quickly called the US # and they were able to book without any issues. Hopefully I can save someone the time by calling everyday as it seems checking AA is sufficient. Good luck to any future hopefuls!