I searched the forum but couldn't find a relevant thread.
A client is currently using PayPal Pro and deprecated Express. We have all kinds of issues with that since they also have legacy (pre-FC) subscriptions that are still active, which means they couldn't update their IPN... fun.
So, we'll handle the Express subscriptions separately, but what we want to know is what happens to the PayPal Pro subscriptions if we change our gateway to Stripe. Will the active subscription just try to process through whichever gateway is active? Or do we run into issues since we don't have a customer record in Stripe for the existing subscription?