Questions regarding the Supplier EFT Remittance Email

We just upgraded from 11.5.10.2 to R12.1.3.   It looks like changing the email for " E-Mail" filed under the "Separate Remittance Advice Delivery" doesn't really work : The email looks changed from the Front. But if use SQL to check the ap_supplier_sites_all. The REMITTANCE_EMAIL field still show the old email.  And the Remittance email was also sent to the old email.

So here are my questions:

1. In R12, is the Supplier Email used for sending the EFT Remittance coming from the following filed?

Supplier > Payment Details > select an EFT site and click "Update"  >  Separate Remittance Advice Delivery :

Delivery Method : Email