Farmbot will reset if it can’t find it’s previously configured wifi network. So you should be able to just move the device to it’s new location and the setup will automatically be re-ran.
Is the WiFi configurator separate code, or is this part of the web app?
It is part of FarmBot OS rather than the web application. The codebase that manages configurator can be found here. If you are curious about the web app code, that can be found here.
As you suggested - reinitialized and worked fine. Now I have another problem - no boot at all when RPi and Arduino are connected via usb. . . Will post separately - thanks for the help - all good on RPi end…