Hello,
The resource "salt dust" from the mod Modern industrialisation is missing. It is using the one from bewitchment. Specialty when you convert crushed salt dust into salt dust.

The Salt Dust functions exactly the same throughout the modpack. I was a little weirded out when they changed it, but I can still use Salt Dust from Bewitchment in Modern Industrialization crafting formulas.
I agree the Modern Industrialization Salt Dust blends in a bit more with everything else, but that's just me being pedantic.
I'm not a developer myself, but I guess replacing the Salt Dust from MI was the path of least resistance. The AOF Team did this so that they can consolidate duplicate materials from other modpacks, which is fine by me!

It was originally unified under MI, but you can't place MI salt in the world, which is a function that Bewitchment has, and people want to use. There shouldn't be a practical difference elsewhere.

Alright, I will get rid of my 75k barrel of MI salt dust and process the one from bewitchment in a new one