How to remove a non-existing endpoint from Sophos Firewall Control Center which shows the endpoint with "missing hearbeat" state 175 days ago. The endpoint was decomissioned and Sophos endpoint uninstalled and removed from Sophos Central about 6 months ago. Rebooting the FW doesn't help. FW is running SFOS 19.5.1 MR-1-Build278 (just installed today).
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