I have booked a month ago a RTW including a DRW-SYD flight. Last week I looked at checkmytrip.net and this flight had been cancelled and replaced automatically by a DRW-BNE and BNE-SYD flights, which matched my original booking. The only problem is that it takes more miles and I have a Global Explorer ticket. I dont' know yet if it will take me more miles, because my tickets have not been issued out yet.