On an Intermapper map, devices attempt to connect themselves to a good subnet oval. (Each oval/subnet on a map contains one or more subnet ranges - that is, a range of IP addresses.) A device attaches itself by drawing a line to a subnet oval that contains its IP address.
If you add another subnet oval (Insert -> Add network...) with the same subnet, you can drag the link from one subnet to another.
If a device's link has been dragged to an oval that doesn't contain it's address, the link reconnects to a subnet that does.
If a device won't stay attached to a subnet that should contain its address, check the subnet masks of the oval and the device. They may be different.
Still have questions? We can help. Submit a case to Technical Support.