Though now I have to ask to what extent do those old community supporter accounts count for anything under the new CSA paradigm?
The old ones have been replaced by the new ones. There's no technical way to automatically transfer them over to the new ones, unfortunately, so it's a slightly annoying process of cancelling the old one at PayPal and manually setting up a new one from here. Not the most elegant process, and not something I can do for you at this end (as I can't access your PayPal account).