Sometimes there is a reason to move tracks around to modify or condense playlists. An example a child becomes more skilled in browsing so more parts of the same book can now be linked to one card rather than distributed across many.
At this point, the only way to move/copy files is to remove them from one playlist and reupload to another.
If there was an option in the 'three dot' menu 'Move this track' amd then choose a new playlist (or something of similar functionality) it would make this easier.
Thank you.