Can somebody please tell me why this imported vector shape isn't showing as a mask?

Hi everybody,

I imported this logo from AI, and all the major beziered shapes are importing just fine. Except this one potion that's not displaying a blending mode or behving like a mask. 

The imported shapes are all identical in fill and stroke. There is no gap in the bezier. In AI all three shapes look black. But for some reason when I import or copy/paste the three wedge shapes the one on the left isn't registering the same.

Has anybody had this happen before?