I believe this is because the generated unique id of that node is derived from the link to its parent: https://gist.github.com/masak/2415865 https://gist.github

I believe this is because the generated unique id of that node is derived from the link to its parent: https://gist.github.com/masak/2415865 https://gist.github.com/masak/2415865 So the "where to attach it to the tree" info is effectively lost.