Unity seems to have incorrectly imported materials for a character model

Unity seems to have incorrectly imported materials for a character model

So I'm working on a game and I have a model of a character, in Milkshapes
he appears to be textured correctly. However in Unity the material for his
eye does not seem to be the correct material. It seems to be using the
swatches image that colors the body of the character.

Strangely, I had to put the char_swatches_lit image onto a new material
that doesn't even exist in the Milkshapes project.
I am almost 100% sure that Unity imported the model incorrectly, if you
can help me fix this that'd be great.