I was not aware of this bug until it was too late for me. When I got Adept Impact, I applied it to my non-adept chroma rush (how I was able to was due to a bug, I've been told). Later, I removed Adept Impact to apply another mod, and noticed that Adept Impact was absent from my mod menu, even for adept weapons. Apparently if you apply an adept mod to a non-adept weapon, it "removes" it from your inventory, and because the collections tab says you have it, you cannot get it/reacquire it again. Is there a way to fix this? I miss my Adept Impact mod :(