I had a machine that was in an organizational group called group1 that was apart of network1
I have moved that machine to a diffrent physical localtion and joined it to a new organization called group2 how ever it is still saying its a member of network1. I do not see any way to remove this machine from this network1 and migrate it to a new network called network2.
Go to the "Discovered Devices - Grid View" and you should able to delete the device/agent from there.
If that does not work you might have to delete the network from "LAN Watch by Network" and rescan and create the Network.