Merging pasted BSTripShape data into existing Nif file.

[Lateraliss]

I have been trying to merge some nif files. I copy the branch from the mesh I want, and paste at end into the nif file I want to alter. I change the values for what they are supposed to be, and it looks how it should in the render window. What I can't figure out is how to make the Scene Root NiNode the parent of these new trishapes.

If I do the extra data value, and add them to the ninode that way, the objects become invisible. If I leave them outside of the ninode, the whole mesh becomes invisible ingame.

I'm just looking to add some modded weapons to Azar's Backpack mod, so I can see them on my back.