Hi,
What is the device that you are working on? Could you please provide the link to the document that you are referring to?
As my understanding, you want to replace the Coordinator that you have in your Zigbee network, and you are worried about the routing tables and all the data.
The method introduced inside, read the data of the eeprom in the old coordinator, and then write it into the new coordinator.
It could be a solution, I am assuming that the coordinator is the TC. You could assign the TC for a router device. In this case, the router is the one that will define who can join the network.
Regards,
Mario