Stroke Lines appearing transparent after Export


I am currently in the process of compositing some animation. In toonboom I separated some layers to make animation easier. I’m finding that when I export a layer that has an invisible stroke as a outside (exterior) line, it appears with a little black line in After Effects. This totally ruins the effect I was going for. Does anyone know how to fix this?

I am exporting TARGA images with color and transparency.

Here are some photos for clarity. The first is what it looks like in harmony, and the next is what it looks like in After Effects

Thank you!