Customizations done on AssignmentResignationReport is not showing on Resignation notifications

Summary: Customizations done on AssignmentResignationReport is not showing on Resignation notifications

Content (please ensure you mask any confidential information): I followed the steps by copying the seeded AssignmentResignationReport from Shared Folders > Human Capital Management > Workflow Notifications to Shared Folders > Custom > Human Capital Management > Workflow Notifications. I then edit the AssignmentResignation.rtf by changing the Recommended for Rehire field to Regrettable Loss. In Setup and Maintenance >Manage Administrator Profile Values, I then changed the profile values of BIP_CLIENT_REFRESH_TIME and BIP_CLIENT_REFRESH_TIME_HCM to 15 minutes. After 15 minutes I logged in as an employee and submitted my resignation. But the Resignation notification that the approver receives still show