In the add-on, you need to change not the editor, but editor_a2.
In the last mission of the campaign, on the second week of the game, I am attacked by such a unique enemy http://gyazo.com/14e715fcb22b4de1013768b1b6d7d9bd.png
It is impossible to defeat him; he goes to my main castle, and I simply lose. Does anyone know how to fight him? I played this campaign a long time ago, but I don't remember such armies appearing in the second week of the game.