The old NTP settings are still displayed even after the NTP server was changed on the VMware Identity Manager (vIDM) appliance configurator page.
VMware Identity Manager 3.3.x
The NTP server can be modified using a script available on the vIDM appliance.
Before changing any settings it is recommended to take a backup, please ensure the backup is valid and can be used in the event of a restore/recovery.
/usr/local/horizon/scripts/ntpServer.hzn --get
/usr/local/horizon/scripts/ntpServer.hzn --set pool.ntp.org