IPN for refunds not working in Live mode

Ray, you may recall we ran through an IPN setup for our client's website, for refunds, which we tested, successfully, using the PayPal IPN Simulator.
Now that we've switched the website to Live credentials, this no longer works.

In the client's PayPal account we have IPN Notifications switched on, and the IPN URL correctly referenced (see screenshots).

PayPal Merchant Technical Support have been less than helpful in their response, stating that "You won't receive an IPN when issuing a refund to a customer, but you should receive one when receiving a refund."

Our understanding was that when a refund is processed in our client's PayPal account, that it would communicate with the IPN URL (page also attached) and update the database accordingly.

Hoping you can shed some light on this.
Thank you.
NJ

You can click on the "IPN history" link from paypal to see if the returns have been posted and note any errors.

I can't imagine why it wouldn't work unless you changed servers and didn't update the connection or have different database tables. The IPN history page will let you see the transactions, errors, and re-post to test the page. I really can't do that from here without FTP access and access to your paypal account.