[stympy]

I recently added affiliate tracking to the SaaS Rails Kit as a starting point for tracking payments to affiliates, etc. It's not a full, automated solution of course, but at least you can track it.

Generally you can't get that stored card data back out of the gateway. You basically have three options for this: 1. Just stick with the one you pick for the life of the app. This is the easiest. :) 2. When you switch keep track of which gateway has the info, maintaining two gateway accounts. 3. Ask users to re-enter their billing info when you switch.

[cattledogit]

Following up on question 2 re switching gateways, I've been told by Braintree, TrustCommerce, and Plimus that they will export credit card data to another vendor for a fee. Of course you should confirm this with them yourself before relying on the info. Some others I contacted won't export, or can't because they don't retain the card data.