Thread:The JoTS/@comment-26126721-20170116152101/@comment-4360159-20170116162516

I was about to say "no clue", and then I was able to access the Special:Export tool without a hitch.

If you export Template:Tree and Template:Tree/node (while making sure the Include templates checkbox is checked), and then use Special:Import here– it should be a simple and clean process. Only problem is that it may cause some unintended changes to other templates, like Template:Documentation.

I was about to do it myself, and then I realized I may have to perform some cleanup afterwards, but you can try it. =P