Sorry for the late reply on this. The nice thing about the Google WiFi network is that you can transition it without having to change settings (in most instances). When you get the new modem from the new ISP, all the settings for the WiFi network should remain the same in the Home app. As long as you are wired to the modem correctly, all your settings should carry over just fine. If you do have issues setting up the network, please let me know.