(1) libgdx TexturePacker treats underscores as special characters (not a bug, just an important note)
I recently had to rename some assets because, apparently, the libgdx texture packer treats underscores as a special character (but Spine Editor doesn't).
I would've wanted to keep all my animations/setup while just telling Spine, "These are the same files, I just renamed them." But there isn't a feature in Spine Editor to help me with this for now.
Maybe this is kind of a border use case but seeing as some people do prefer to name their files with underscores followed by numbers (also, photoshop's "Export layers to files" can also result in similar naming if you named your layers as numbers), I expect that it might be quite common to make this mistake and then having to work around it by renaming the files and all that stuff.
(2) Import Data bug
Since the assets were just plain text, resolving the matter on that front was just a matter of Find and Replace. But it did also involve having to rename a lot of files. After all that was done, I needed to make the same changes on the Spine Project so I could add animations and continue editing.
I tried to use Spine Editor's "Import Data... " feature to reimport my modified JSON. It imported the skeleton and setup fine but none of the animations were imported correctly. (most of which were keys in the Image Timeline).
