Cpt_Rei_Fukai wrote:
As it is an UTF-File(you can think of it like an archive) it acutally contains many textures in one file. Use the UTF-Editor to replace the desired texture.

Thanks, this program helped me get a little closer as I am able to open up the Montage64.tga part of the file now and export it and I do see 14 icons in there which the middle 8 icons and the first one in the last row correspond to what I am trying to change. Is there another program that builds that short of centered image layout for each icon as the original HUD looks to be 256x256 and the modded one is 1024x1024. Here is the exported image put on a black background since it was originally on a transparent one just in case you might have any ideas of the next steps to try.

Cpt_Rei_Fukai wrote:
I haven’t done any hud modifications, but DATA\Interface\buttontextures.txm seems relevant. Be careful though, replacing the file will revert other buttons too, you should preferably just replace the Montage64 texture.

I have never modded for this game so was hoping it might be something simple as I am not even sure how to go about replacing the Montage64 texture as I am not noticing that listed anywhere.

I was wondering if someone might know which files correspond to the HUD elements at the top center when in Space flight that I have inside the red box in this example picture. I am using another HUD mod and would like to restore just this portion to the default look so I am hoping someone might know which file or files I would need to replace.