Note that old node programs, (assemblages of old nodes), may open and work in NodeEditorPlus, but they may look different, and inherit some differences from the new node.
Example: ConvertPts from an old node program. Mode order is different, but it still functions. Opening the new, Plus version shows different input and output.

I did an update of ConvertPts2, (it had some harmless errors as well, and was not multitype), to do interpcurve curves rather that control point curves, and called it ConvertPts3. It would go in the extension folder. (not uploaded) . Interpcurve could be added to ConvertPts, in the points.js big file.

- Brian