I had the same issue with a FF booking I upgraded to Business - points weren't taken off, booking looked OK but when I asked to get it emailed it still had the old booking. I rang and they finalised the change and everything reflects the correct booking now.
It's clear about not being able to use the vouchers for Classic Awards and Any Seat Awards, but does anyone know if you can use them with Points + Pay?
Has anyone had experience booking National Car Hire through the V Australia / Virgin Blue website? Their rates are very low eg 21 March - 20 April for USD$508 including LSI & LDW for a premium car - pick up and drop off in Los Angeles.