Opening Fields

[Gloweye]

Hey, Im a beginner mod author, and I was wondering about some practices of basic mod functionality. I'm attempting to make a small plugin(distributing Lustmord Armor among the Volkihar Vampires), and I was wondering about the way mods overwrite each other. I've made some edits to some NPC's(Added an ebony dagger, switched around some NPC's links to their default outfits), but if I load that after the Unofficial Dawnguard Patch, will this override the changes the Unofficial Patch makes in this files? (For example, the Unofficial Patch adds on-death Items, and some keywords/visual related stuff)

 

For the Unofficial Patch, I can of course copy them over and add it as a master, but I dare bet there are more mods altering these NPC's, so my question is more about the principle base than this single example.

 

TL;DR, Will a change to a NPC's attribute cancel out changes made to other attributes of that NPC?

 

(General Information, I only used Tes5Edit so far. Using Mod Organizer. Got all DLC's.)