Bill, I've included a picture of the fence + original easement map and agreement below.
In the attached picture, my neighbor's fence appears on the left, and one
panel of my fence appears on the right.
Before installing the drain, you guys took down my existing fence, (the visible panel on the right) and then put it back up again. (You'll notice a slight gap between the fences in the picture; that's because the guys you hired hadn't put up the one remaining
piece yet that connects to my neighbor's fence.)