I think what I am seeing is an artifact of the projection; but, I would like to get input from someone more knowledgeable than myself...
I have a line in NAD83 that I am viewing in Alaska state plane zone 4. When I clip the line it "jumps" off the original line and moves to the south. There is a significant distance between vertexes (~15,000m) for the input line in this area.
When things are viewed in NAD83 in arc everything lines up again.
Is this the expected behavior?