what would cause part of my livery to be blacked out after loading in the sim?

i'm using the 767-300F livery pack 1 to try and create a custom livery. it loads in the hanger and looks fine. but when I load into the world the interior has a blacked out section that covers Fus_2 exterior section. i've tried removing the black section in blender but can't get the interior model to load in the simulator at all. is there a way to fix this or is it done intentionally to keep people from creating liveries for the 763F?