@TP-Link 5 years have passed and still no update regarding this matter? It's just a simple feature...

  @c89mathe I just set up a new smart home with Tapo gear - 13 switches, 4 plugs, 3 door locks, and it wasn't until I finished getting it all named and automated that I discovered the benefits of having it all on an IoT network. Thankfully I was able to move everything over one by one using the "wifi reset" method which preserved all the other settings. Basically, hold the reset button for 5 seconds which puts it in pairing mode, then add the device to the Tapo app specifying the new network, and eventually the app will recognize the device as "pre-configured" and will ask if you want to preserve the settings. Yes! Probably took 45 minutes total to do all my devices.