Texture not linked to material when import FBX

Hi, my project requires me to import a lot of FBXs. Each FBX comes with a colour map. When I import the files, Unreal will generate a material (instance or new, I tried both), but will not link the texture to the material. The texture is imported, but just not linked.

Anyone know how I can link the textures back with a click (hopefully)? I have thousands of FBX to import, so doing it manually is not an option.

Thanks in advance!