boostrap:nodes: node_move_content: support case with set "typ"
boostrap:nodes: node_move_content: support case with set "typ"

I believe it used to not be supported on purpose. But we've come to rely
on it, and it was broken -- not setting the backlinks properly.

nanocritical/n,nanocritical/n,nanocritical/n,nanocritical/n