Current questions and answers regarding the map editor.

Hi everyone! I need some help. I don't quite understand how all these archives in the game files work...

Situation:
I downloaded a mod for Tribes of the East, which adds campaigns from the original game and Hammers of Fate. I want to edit the maps from this mod specifically within the Tribes of the East mod.

In short, I want to edit the campaign maps from the original game/Hammers of Fate within the Tribes of the East mod... How do I do that?