To minimize the effort required to restore the configuration on a managed firewall involving a Return Merchandise Authorization (RMA), replace the serial number of the old firewall with that of the new firewall on Panorama. To then restore the configuration on the replacement firewall, either import a firewall state that you previously generated and exported from the firewall or use Panorama to generate a partial device state for managed firewalls running PAN-OS 5.0 and later versions. By replacing the serial number and importing the firewall state, you can resume using Panorama to manage the firewall.