When contact lost model destruction is enabled it does not work through a SpectroSERVER restart.
Release : 21.2
Component : Spectrum Core / SpectroSERVER
The SpectroSERVER restart would reset the timer.
This is resolved in patches Spectrum_21.02.08.PTF_21.2.815 and Spectrum_21.02.12.PTF_21.2.1201 and is included in NetOps 22.2.1 release:
Symptom : Properly handle when devices have been down for over the configured Contact lost model destruction threshold, accounting for time down across SpectroSERVER restarts.
Resolution : Model destruction will happen as per configured threshold.
(DE536282,33117459 )
DE536282