I have a part we inherited, made some changes, but it has a strange line in it that I cannot find the source of, and it shows up on the part and in the drawing.

The 0.005mm extruded cut on each end is only to allow us to change the surface colors to match the part requirement.

If anyone can find out where this strange line comes from, and how to get rid of it, it would be greatly appreciated. It is in SW 2016.