Next Double click on the words..Object color, Highlight Color, Ambient Color, Reflective Color, Highlight Strength, Transparency Min, Transparency Max, Transparency Falloff, Texture Map, Texture Strength, Apply Texture to highlight, Bump Map, Bump Strength, Reflection Map, Reflection Strength, transparency map. Why you ask? Simple,Because you only want to change the map on the eyes, you don't want to affect the mapping on the rest of the body, so what you are doing by closing off those channels is locking it so it can't be affected. There is no data in those areas, now. They won't be saved with the final MAT pose.