I have some questions about .ITEM files:

What are they exactly for?

When I import them to 3ds max with vercingetorix,s tool, I dont see any modifiers applied to them (skin, editable poly/mesh), so how can I edit them?

Is there a .txt that controls which .ITEM files are used?

Is there a way to edit building animations?

Is something else needed to make them appear modified in-game?