My Experience has experienced the opposite
Thank you so much for your help so far and for trying to point me in the right direction.
The reason I am even seeking a solution through the checkout_success page, is because I could not get the "store in database" and " send email confirmation" to be triggered correctly to cause that to happen.
Even though we had record of failed attempts from Authorize.net, the same info that was rejected by A.net, was entered in the database, recorded as a sale, and the results were emailed to the customer.
So, although I set the trigger for "any form post" or "current page submit", somewhere it is coded so that it is REALLY triggered when Authorize.net sends the authorization, right?
Where could I see that in the code?
Does this require special custom coding?
What are the correct settings to get this functionality operational?
I really want to understand how to get this right - thanks again,