So I've been trying to add some icons for parts mods that I'm using that didn't have them and for some reason only the high res icon that shows up when you open the description got changed, I've modified the high res icons in solo for the individual items and the low res ones that is one texture with a bunch of items, the icon IDs for the solo items were correct too.
EDIT1:
I've also extracted the tpf files after mounting them and my changes were still there so it's not like that got messed up somehow
EDIT2:
Managed to get icons to work but not names and descriptions, by using UXM instead of ER BDT Tool, I have no idea why the same workflow worked for icons but not for names/descriptions
Went through the troubleshooting guide and did all steps thoroughly, and the items names and descriptions won't change no matter what