Nigel,
OK, I tested it out, and this is what I have confirmed:
1. CV transactions that begin with a Unit Price, and then are converted manually at Authorize.net to a subscription, are not recognized as Subscriptions in the My Account module. (At least not in the very short time frame I gave it.)
2. CV (and Authorize.net) separate "Orders" from "Subscriptions". So, when purchasing a product set up with a recurring price, the purchase shows up in My Orders; subsequent billings are in the My Subscriptions tab.
3. Cancelling the Subscription does not cancel the first charge; one has to go to My Orders to cancel that.
From your reply, it appears that going forward, CV will generate an email to purchasers of Subscriptions if a transaction has failed. (Right now, we get those notices from Authorize.net, but they do not send anything to the actual customer.) That will be a definite help!
Thanks! (And CV is a great shop for us, BTW!)
Pat