jay (support) wrote:... I'm also surprised that the Z-Stick connection in Indigo was in any way effected, unless you have the new Gen5 stick and you moved it to a different USB port. The port name used for those devices depends on which USB port it's plugged in to.
When I upgraded my 2017 iMac to Mojave, Z-Wave didn't work and I had to reconfigure the Z-Wave port and select it as usbmodem14601. I don't know what it was before and I hadn't unplugged the Gen 5 Z-Stick, so it was still plugged into the same USB port as when the mac was running High Sierra.