After carefully going through the steps to export the new device (Insteon switch) configuration to RP and importing and synching without success, including manually editing the export file which kept putting the device in the old position, A02, while RP kept it in A04, I manually changed the RP listing back to A02. Everything now works and is controlled by M1 to go again. Fixed but I don’t understand why I had to do that. The export/import procedure should have done it automatically.
Mal Johnson