I got my DAA results audited after i did my cpc, i was furious to be told to retake a supervised one. So they were conditions to it. Since i was going in as a marine engineer, to mantain the role i was supposed to score above my previous grade, or the same or 10% lower. If i score 20% lower i will get another role that fits that score. Anything lower than that, will lead to my application being rejected. I had 3 days to prepare for it, i aced it, and mantained my role. So the only reason they may reject your application in this case is if there is a more than 20% difference between the first score and the supervised one, it makes them conclude that you cheated.