Creation kit keeps removing my mod's master file, and changing the formid of my mod's overriding armoraddon

[dragon3025]

I installed some custom meshes for a lot of clothing, and one of them was the merchant outfit. I installed opulent outfits which adds about 6 custom merchant outfits that uses the original mesh and re-textures them.

With the custom merchant mesh it's re-texturing the wrong parts, so I used tes5edit to copy the armor addon as overrides into my mod. When I fixed the overrides in creation kit and saved, it removed opulent outfits as the master file, and changed the form ids of the overrides so they're no longer matching the form ids in opulent outfits.

I tried this tutorial here, but it didn't work: https://forums.nexusmods.com/index.php?/topic/754151-tutorials-without-youtoob/page-2&do=findComment&comment=6035531

How do I make the changes to the override armor addons and save it so that it keeps opulent outfits as the master and it doesn't change the form ids?

[dragon3025]

https://forums.nexusmods.com/index.php?/topic/964154-creation-kit-help/?p=7783250