To make a long story short... if the WLC Realtime Scan is disabled, then CyberLock will automatically cleanup the whitelist every hour, which removes any whitelisted item where the file no longer exists. If the WLC Realtime Scan is enabled, CyberLock will automatically cleanup the whitelist during the WLC scan.
BTW, the automatic cleanup also ensures that any pre-existing malware is not whitelisted, because once any pre-existing malware is removed by the AV or CyberLock, it is also removed from the whitelist.