NifSkope mods and interactable props problem

[byteram]

I'm tring to make my custom mod on prop but i don't undestand why when i edit .nif file the prop stop to be collectable / interactable in game.

 

For example i extract microscope.nif scale it up or down a bit and save go ingame and find a microscope and the text E) Take not appear.

 

I'm using NifSkope 2.0 Dev 10