I am migrating from Spotify and I want iTunes to accommodate the way I used to add songs to a "favorites" playlist, just like the Starred Songs works on Spotify.
Initially I created a Smart Playlist to self-update with all my hearted/loved tracks (let's call this Playlist 1). That didn't work because apparently the heart rating doesn't persist between devices, and most of the point of this is so I can have this self-updating playlist available offline on mobile.
My second solution was to create a non-smart playlist and manually update that one with any new music the smart playlist catches. (Let's call that Playlist 2.) That works (I can set this manual playlist to be kept accessible offline on my phone), but it's cumbersome to manually copy-paste songs every time I heart new tracks.
My third solution was to create another smart playlist especially made to mirror the first. (Let's call this Playlist 3.) The first playlist is set to auto-add any hearted tracks, but since this parameter doesn't carry to mobile, I made this second smart playlist that simply adds whatever music is added to the first. Essentially a mirror playlist, but with a different parameter.
This kinda works, but I get a strange error:
The playlist was created, and it works as I intended (successfully mirroring the first one at all times), but apparently I can't access it from other devices for some reason.
Why does this happen? The Playlist 3 contains exactly the same tracks as Playlist 1, so the given reason that Playlist 3 "includes other media kinds or songs that are not eligible" doesn't make any sense.
Anyone knows why is this happening and/or how could I solve my initial problem?