I know a lot of vic truck drivers get away with it by not paying the fine you get in nsw, once you pay it then the points come off, only down side is that if you get pulled over in nsw and have racked up too many unpaid fines they will send you back to the border (truck drivers any way).
I got a fine in a mates car in perth about 5 or so years ago, when i wrote down my license number i changed 2 of them, about a month later i got a call from a cop over there saying that the number was wrong and he needed my license number again, after i came to the conclusion that it wasnt my mate trying to stir me up i gave him my license number, with 2 of the other numbers changed, never heard about it again.