I've finished the conversion. With your instructions it was surprisingly easy and everything now works as it should!
I will then wait for the permission before uploading , but I'm ready to upload the mod if desired. (In 3 Versions small size, medium size, large size)
Of course I have named Maxareuos as the author of the Mod.
I have not yet received a response - let's wait till the end of the week and then I'll talk with Balthazar.
A work of art is never finished, merely abandoned
OK I installed Penguins Icon Mod and replaced whatever icons he had there with strategic icons as proof of concept and guess what... the mexes icons are still fucked up. What I did worked partially, icons except mexes and pgens and some others get replaced. I think "howering over mexes" did something with t1 icons
I'll look at this this weekend too then. Busy weekend 
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A work of art is never finished, merely abandoned
@karlhoffman said in Converting Advanced Strategic Icons:
OK I installed Penguins Icon Mod and replaced whatever icons he had there with strategic icons as proof of concept and guess what... the mexes icons are still fucked up. What I did worked partially, icons except mexes and pgens and some others get replaced. I think "howering over mexes" did something with t1 icons
OK I had problem with game, I reinstalled ASI and FAF and supcom and everything is working. Problem was on my side
@KarlHoffman do you have a link to the installer for me?
A work of art is never finished, merely abandoned
Just pitching in that the icons work fine for me. I think I'm using this version: https://www.dropbox.com/s/2wnafvqj1mxwyut/Advanced Strategic Icons mod installer 3.3.1.zip?dl=0
Could it affect if I've previously added them to base game or something?
@jip link for ASI or for Penguins Icon Mod ? I didn't really create the mod in a proper way I just tried to see if icons works so I modify existing Penguins Icon Mod for myself only. I will read how to create mods and try to make a proper one. Never tried create mod before
Due to copyright issues with the author these are likely to be removed as we work things out with the author
@sheikah oh copyright? so author have to publish it? I can share folder with him through google drive or something
Penguin has put his icons into the public domain (that's how I'm interpreting his 1 sentence license) so you can use and modify those all you want and upload a mod that uses them: https://forum.faforever.com/topic/2554/list-of-crowdsourced-icons-for-ui-mods/2?_=1632360371537
ok it getting complicated in terms of copyright and sht, I only started to do this cause I had problems with icons. All I did replaced icons in Penguins mod with ASI icons. I solved icons for myself it is very easy. If anyone need I can share mods folders with different sizes of icons
I cant seem to get my mex or pgen icons back. Ive tried makin a new mod folder which didnt work and have tried installing penguins mod , im sure it installed because the ACU icon was different but still no mex or pgen icons. I am lost . :(*
@toontrack
You might want to try temporarily deleting or moving all of your downloaded mods to another folder (that FA/FAF won't access) and seeing if that resolves your issues. There presently seem to be some bugs that result in certain downloaded mods (that use custom textures) affecting images despite not being enabled... Alternatively, you could try putting the (properly named) mex/pgen icons into the icon mod folder (in the same location where the change ACU icon/etc is).
pfp credit to gieb
There seems to be something in how the ASI DDS files are saved. Simply opening and exporting from gimp and copying back seems to work. Also if you are installing other mod might want to make sure the original ASI nxt file is gone from gamedata folder.
Also ASI installer installs scd version into steam folder. Don't think that would affect faf, but maybe coop still uses the steam files?
But maybe remove it as well to rule out issue.