Hi, Brian
With Zigzag it dose the same, Thy also don't finish the Offset's or Pocket's.
In offsets & Pocket's, It looks like LC is Using the portion of Dxf that generates the Spline Profile shape, Not the Spline, As LC did in earlier normal file in-port's.
Look up a few Post's above,
How about posting this Working/Screen Shot, Show Me The Error's I've Made,
Many hours spent for such a blow off answer
, Just trying to post bug's I Find.
May Be Me, Been there Before, May Be You, Seen That Too.

and I now it's a Bata-Bata Version
Thanks, Chip