Maybe I can help. The answer that Mr. Kingsley gave was that it's another database he can verify against.
If indeed you move, and there ends up being two Karen Redmans at another address, or two different addresses, he could check through the driver's licence number that you are the one he's looking for, under the latest database.
So he's using other people's databases as a way of qualifying that, ah, you did move. You didn't tell Elections Canada, but you told the motor vehicle people.