We're doing the swtich now. We have a Authorize.net account. I placed in the credentials thru the eCart Payment Gateway Credentials. I don't see an option to 'apply the process payment server behavior for authorize.net'
Also, I went to the page per below but should it go to the checkout_success.php page?
UPDATE: I ran the checkout wizard and just getting the payment script portion)
I manually removed the Paypal info as I could not get rid of thru software.