oh I see them now. I did not notice the scroll bar at the bottom.
Yeah, that happens sometimes and I really cannot explain why. There are very few cv's in the original curve. But I was not able to duplicate it, so a small number of cv's does not seem to be at issue.
When that happens I usually just manually recreate the original curve and that usually fixes it.
Maya nurbs tools have always been a little squirely. I still find them more easy to use then b-splines of other packages though. I really hope autodesk will revamp them and perhaps bring the more robust and "reliable" tools from what used to be studio tools into Maya.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675