Combing the channels with 1 SSID is a useful feature. What I need to know beforehand is that it will wipe out all the passwords on my 5Mhz channel.

@cheemcheem I purchased one of TPLink's AX50 routers from Best buy in May. Last month I switched on the Smart Connect feature. Apparently it completely wiped out my 5 Mhz channel, SSID name, Password...