ITUNES PLAYLIST FOLDERS DO NOT RECOGNIZE CONTENTS OF SUBFOLDERS
I have a big library and I consider myself an advanced user of iTunes. I create folders and put playlists in them to organize my music. For example, I have a “greatest hits” folder which has 20 playlists - each for a different artist (e.g. Bob Dylan, Beatles, Pinback). When you create a “new” playlist it goes to the bottom of everything in the side bar and you have to go find it and move it into the folder which is a minor PITA. So instead, I duplicate playlists, erase the contents, rename it and then populate it. Unfortunately, after having done this LOADS OF TIMES I have now realized the folders do not recognize the contents of duplicated playlists. How can I force the folders to refresh and recognize the contents of these “duplicated” playlists (which do NOT have duplicated contents - for the people who need more detail: I had a Bob Dylan playlist, duplicated it, renamed the duplicate “coldplay best of,” deleted the Bob songs and filled it with coldplay songs and now the greatest hits folder only shows Bob songs... and I’ve of course restarted and done all those kinds of things).
iMac, macOS 10.12