Can't remove hidden links to texture files


I am working on a max file where the names of the texture files have changed, but somehow Max has a hidden reference to the file and I can’t get rid of the reference.
I tried reset material editor slots and I tried creating a new file and merging all objects into the new file, but it still has a reference to the file. Also, I checked the UnwrapUVW modifier, which can have hidden references. The asset tracking dialog tells me there’s a missing file, but it doesn’t say which object is referencing it.
Anyone have any idea’s how to resolve the problem?


To answer my own post, it was the UnwrapUVW modifier after all. I had to go through every object in the scene and collapse the modifiers