I use apple Music on iphone 6, macbook pro With the latest itunes (updated it only a couple of weeks ago) and macOS Sierra. When I try using the apple music icloud Library, on my macbook pro With iTunes, it does not work. I would like to note i got a complicated file structure in itunes and aprox 8000 - 15 000 tracks downloaded in aprox 10 years time. Anyway, when I activate apple Music icloud Music library in Itunes the problem starts for all my downloaded files. The premaid playlists ether get dublicated or the playlist structure gets ruiend. I have tried to do this progress allot of times, but it always turns out bad. The playlists gets duplicated or the playliststructure gets ruiend - example is that playlists are duplicated and moved from a playlistfolder and out as a single playlist. The playliststracture becomes a complete mess. The problem, as told above, happens right after the itunes scanning progress finnishes when pushing the button for icloud music library. I called apple Music service for help, but apple told me there was nothing that could be done, and that icloud somtimes restructure the playlists. This is not acceptable for me. I DJ allot and I need my playlist structures and songs to be the way I want them to be. Not the way icloud Music Library wants them. I would like to note i am talking about downloaded mp3 tracks in a range of 10 years.