There are different ways to copy commands from a other config.
1. You can Install a second instance of VC with the Kodi config. Create a shortcut on your desktop and open the properties of the shortcut - then append to the target file -new (\VoxCommando.exe -new)
this allows you to start a second instance of VC with a different config.
Now you can start both VC versions - open in both the Command tree and copy and paste the needed commands.
2. You will find also a voicecommands.xml for Kodi in your VC main folder in resources/configs/English. Unzip the needed config file and now you can open the voicecommands.xml from the unziped file as a second Window in your Commandtree Editor.