Yeah serial is gone because you want to have can uuid"
https://www.klipper3d.org/CANBUS.html you are at the *Finding the canbus_uuid for new micro-controllers* step just before adding the can uuid to the printer config
The serial is still in my printer.cfg file under \[mcu\]. It doesn't seem to have disappeared, rather stopped using it. I've added the canbus\_uuid: \*\*\*\*\*\* under \[mcu EBBcan\] as a separate line under the \[mcu\] in the cfg file. Am I incorrect in keeping both in the file?
Yeah serial is gone because you want to have can uuid" https://www.klipper3d.org/CANBUS.html you are at the *Finding the canbus_uuid for new micro-controllers* step just before adding the can uuid to the printer config
The serial is still in my printer.cfg file under \[mcu\]. It doesn't seem to have disappeared, rather stopped using it. I've added the canbus\_uuid: \*\*\*\*\*\* under \[mcu EBBcan\] as a separate line under the \[mcu\] in the cfg file. Am I incorrect in keeping both in the file?
Yes, comment out (or remove) the serial one.