I switched devices, from Samsung to Pixel. Everything fine except I want to keep my 100+ wifi-connections. I tried a Neo Backup, but that doesn’t seen to do anything. I copied WifiConfigStore.xml but it gets replaced. Do you have an up-to-date recommendation how to get this done?
So, I solved it! As explained here, you have to disable wifi, replace WifiConfigStore.xml at the right location (mine was /data/misc/apexdata/com.android.wifi). Then enable USB debugging, use ADB to give it the right permissions, reboot, turn on wifi and there they are.