There are even STORIES about this now on various computer and music sites. A quick Google search found this at the top of the list today: http://www.theverge.com/2015/7/1/8877129/apple-music-icloud-problems So if nothing else, hopefully this will get fixed sooner or later. I would have expected it to be fixed in the many updates since this thread started, but still not working for me on Mac OS or on my PCs.
Apple Insider says the following (from this column: http://appleinsider.com/articles/15/07/03/how-apple-music-and-the-icloud-music-l ibrary-work-with-itunes-match
Quote:
At the moment iCloud Music Library is potentially dangerous to turn on. Users have complained about it creating duplicates, assigning inaccurate metadata and artwork, and/or restoring previously-deleted music.
For people with large, carefully-tagged iTunes libraries, this can create chaos and undo years of work. In our own experiences, we've also run into some major issues in enabling the feature.
More seriously the option is in some cases not only deleting playlists, but causing the files in them to disappear.