PurchaseOrderApprovalNotificationLayout

When a Purchase Order (PO) is created, the approval notification is sent correctly; however, after modifying the RTF to add line-level fields, the notification still displays the standard template and does not reflect the custom RTF, even after uploading it to BI Publisher and trying the profile option BIP_CLIENT_REFRESH_TIME, and clarification is required on the correct steps to ensure the custom RTF is used and the line-level fields appear in the PO Approval Notification.