The auto-discovery only starts on the cloned-device if you had set auto-discovery in the source-device.
So before you clone a device, make sure no auto-discovery is selected in the according device-settings.
Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.