I wish I had of read this article before I re-arranged my subversioned files/folders using the least efficient way imaginable. Next time, I will do this:
To move files the right way using Tortoise, highlight the file(s) you want to move and drag and drop to the new location using the RIGHT mouse button. When you drop the file(s) to the new location you will be presented with a popup menu. Here you can select a SVN move, copy, or export. I selected ‘SVN Move versioned files here’.