Hey Vincent,
Run each line in the Terminal.app:
defaults write com.stairways.keyboardmaestro.engine AppleScriptGoogleChromeName "Brave Browser"
defaults write com.stairways.keyboardmaestro.engine BrowserGoogleChromeName "Brave Browser"
Make sure this setting is ON in Brave:
It works for me:
You might quit and restart both the Keyboard Maestro Editor and Keyboard Maestro Engine – just for good measure.
NOTE – These settings do NOT affect the Front Browser actions in KM8.x. Support for that will have to wait until KM9 comes out.
-Chris