Quote Originally Posted by Bubbadood View Post
Sorry for the obvious question, once this is up and running I assume it's recommended to disable PayPal Payments Pro and PayPal Express Checkout ?
To be very specific, the recommended operation will be to *retire* the old modules. See documentation:

https://docs.zen-cart.com/user/payment/paypal_restful/

https://docs.zen-cart.com/user/payment/retirement/

In 2.0.0, this can be done through the admin; in prior versions it requires a code tweak (shown on the second help page above).