monit is running a service which isn't shown up in the settings

[viragomann]

The missing service in settings is obviously working well. But it isn't shown on the services settings page, hence I'm not able to edit it.

On the settings page a blue banner is displaced with "The configuration contains manual overwrites, these may interfere with the settings configured here."
I didn't make any changes aside form the GUI though. Possibly something went wrong during an update?

I tried to export the config.xml and searched for the named service, but nothing. I re-imported the config and rebooted the system, but the service is still shown up in monit status.
Neither I can find the service in /usr/local/etc/monitrc.

So I'm wondering, how I can get rid of the orphaned service now. Any other place, where I can look for this setting?