Unless the old network provider has some alternate use that positively affects the network, it should be disregarded and life should move on. Many things in life have to be left behind in order for life to proceed at its fullest. The fibers of the network need to do their job and also respect its environment. Many environments are invaded by networks that disregard the invasion. Unless the network is born into the environment, it will always be an outsider and should respect present and vital conditions existing.
Networks provide life with access to all aspects involved.
How the network works within life relies on how necessary it is. Unnecessary networks are not needed. The connection point, the node, the hub. A point of entry and departure. The bridge connects to the ground, the network needs to release information.