You can retain the policies when you uninstall and reinstall the SCP extension. Select the option Keep policy and client task data on the Policy and Task Retention tab. It is important to ensure that the above-mentioned retention checkbox is enabled so that the policy settings are always backed up in ePO.When an SCP extension is removed, policy settings will also be deleted from the SCP policies, rendering the policies blank. But, the policy settings can be restored as they were backed up in ePO, thanks to the retention checkbox. You can restore the policy settings by duplicating the original SCP policy.
NOTE: If the SCP extension is not working after its upgrade, restart the following services on the ePO server - Trellix ePolicy Orcestrator x x Application Server, Trellix ePolicy Orchestrator x x Event Parser and Trellix ePolicy Orchestartor x x Server.