I've been using Lightroom for a few years. At one point I kept keywords in a hierarchy, so I'd have something like:
Animals > Birds > Eagles
This worked well, I could include the option to export parent keywords and all was good. Then I got lazy and started tagging things all over the place. So whereas my "Eagles" tag is nicely under Animals and Birds, I might have a Falcons or Parrot keyword that stands on its own and doesn't have the parental structure.
Rearranging the keyword hierarchy within Lightroom is very time-consuming... dragging and dropping isn't so quick when there are thousands of items in play.
I know that Lightroom has the ability to export and import keywords, but I'm struggling with the best way to perhaps clean this up. Is there a good way to manipulate the keywords externally and then bring that back into Lightroom?