The "EDIT" button in the Trigger tab of an input doesn't make sense. It should be greyed out unless you click a trigger to which it then should be enabled and then say "UPDATE". This is very confusing UI that trips up a lot of newer vMix users. Additionally consider a confirmation dialog if you make a change and click the "CLOSE" button... How many times have we all made a change just to throw it away and wonder why it's not working as expected?!