This is true, but as a seller you are best off getting the new buyer to fill in the transfer papers, buyer gets a copy and seller gets a copy, seller takes his to vic roads and from the date on those papers forward all fines will go to the new owner as gimps stated.
Also as other people have said if you are happy with the condition of the car then this method is fine, how ever if you get it back to nsw and find that there are worn bush's, shocks, springs and low brake pads and discs then you have to wear the cost of them, if you make the seller get a rwc in vic then all of these will need to be replaced to pass a rwc.
There are also some odd things i have found out, when i reg'd my daily 3 years ago it had a rip in the seat, on went seat covers and all was good, how ever i re reg'd it a few weeks ago and found out that if the seat is ripped it has to be re trimmed or replaced, although my guy let it pass as i got one of his mates to take the car to him for me, little things like this could make getting a vic rwc a very good thing.