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Drag a node without dragging links

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@ernestjessee wrote:

Hi,
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?

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