not sure what object type they are, if they're not static, you can make statics by just navigating to "statics" in object window, right-click "new" and, where it says model, point it to the model (you can just copy it out from the original item in the same place)

this might or might not do the trick in matters of havok, likely it won't.

in this case, you could put a DefaultDisableHavokOnLoad script on the ref (or if there's more of them on your new base item)

Both masks have vanilla Texture Sets attached to them. For you to achieve what you want when making the static version, you will need to add in the texture set applicable to each mask. Its easy to do. Make your individual masks with distinct IDs per DF127, then open up the masks. Go to the World Model and click Edit. In the Alternate Textures box, you are going to add the required texture. In the box next to the listed texture, right click. A popup will appear. The texture you need for Ahzidal is DLC2AcolyteMaskVarient02. For Dukkan, you need DLC2AcolyteMaskVarient03. Save the changes. If you run across this problem again, you can get the info about the needed textures by looking at the original models. The Texture Sets used to make the same models look different will be listed there.

That worked perfectly, thanks for being so detailed. You understood exactly what I needed, thank you Skybeth!