in a new show file in patch
Set channel 1 to a dimmer
set channel 2 to a dimmer
Then chan1 copy to chan2 Part ( isn't accepted )
This is not supported syntax and is expected to error out. You can move Chan 1 to Chan 2 Part 2 but copy is not currently supported.
Feature request then :)
(+) Eos 3.1.2 Open Beta Feature Requests - Eos 3.1.2 Open Beta - ETC - Community