Drag a node without dragging links

I have a diagram that allows the user to re-arrange nodes by dragging a particular node and dropping in on another node. The dragged node is then moved to just below the drop target. Upon drag start, I would like the node to appear with no links and appear “ghosted” in it’s original position. Once dropped on a valid target, the layout can handle the rest. Is there an example that does this? Can you give me a hint as to how to accomplish?

Sure: Non-Realtime Dragging
with the custom DraggingTool at: http://gojs.net/latest/extensions/NonRealtimeDraggingTool.js

I intended to make that a standard extension and then forgot about it.

this works perfectly. Thank you very much