Join Date: Aug 2004
Location: SAT
Programs: AA EXP BA Gold, TK Gold, Hyatt Globalist, Hilton Diamond, AS 100K, QR PLT, SAS Gold, IHG Ambassador
Posts: 5,924
But, yes, you should be able to buy a AUS-MIA ticket and then use the award ticket. No problems.
If you post what and when you are trying to book, you can get great help on here.