OK, either one of us misunderstands the system, and/or we have a large communications gap!It matters because your second, third, or further choices could already be eliminated or elected before your first choice candidate is.
This is from the Department of the Environment:
Now, that's my understanding of the system - your vote goes to your number 2 preference when your number 1 is eliminated. If your number 2 is eliminated, it goes to your number 3. The 'single' refers to "only one of the preferences in your vote is active at a time".Only one of the preferences in your vote is active at a time. The vote stays with your first preference candidate unless and until he/she does not need it any more (either because he/she has been elected or excluded from the count). If your vote is transferred, it passes to your next highest preference for a candidate still in the running. Your vote could transfer a number of times at the same election to your lower preference candidates.
As far as I can see, what you're saying is that your vote can only transfer once. That seems to be at odds with the Department's statement above?