WHM 10.8.0 cPanel 10.9.0-S119
RedHat Enterprise 4 i686 - WHM X v3.1.0
Main - SQL Services - Additional MySQL Access Hosts...
Adding an IP and clicking the CLICK HERE link does indeed propagate an added IP to all accounts, however, if one deletes an IP from the list and clicks the CLICK HERE link the dropped IP is still in everyaccount and must be deleted manually from all acounts...
RedHat Enterprise 4 i686 - WHM X v3.1.0
Main - SQL Services - Additional MySQL Access Hosts...
Adding an IP and clicking the CLICK HERE link does indeed propagate an added IP to all accounts, however, if one deletes an IP from the list and clicks the CLICK HERE link the dropped IP is still in everyaccount and must be deleted manually from all acounts...