What is the meaning of the sensor number that appears for the cadence sensor on the Pairing Page? Where does that number associated with the cadence sensor on the Pairing Page come from? It does not match the number that my 2 Garmin cadence sensors have sent to my Edge sensor, One for my Road Bike, and one for my Hybrid. I would like to match numbers to sensors, so I can work through sensor failure situations. As an example, on Zwift the cadence sensor shows as 38334. My 2 sensors present to the Edge as 234942 and 118275. Not even close.
Are you connecting via Bluetooth in Zwift by any chance? You would then seen the BT idents of the devices, while your Edge probably shows the ANT+ ident.
Connecting to Zwift via Ant+