Discovery Central / Network Sonar inport NPM 10.2.1

I just completed connecting our Orion Server to a previously restricted network.

I completed a network discovery and added in the new devices.  (Nice tool for a new network or new installation. )

Come to find out all the devices were also added into NCM; PC workstations, servers, etc.   Why????

Anyway to limit this?  Since this tool can also be scheduled for automatic discovery there are no limiting methods I can see to exclude this from happening.