Sorry, I don't see an iTunes forum anywhere...
iTunes behavior is a bit odd. I only have one playlist that I sync to my phone, yet "Songs" under Library on my phone seems to show a massively long list of songs that I haven't sync'd. Most are indicated by a "Download cloud" icon.
Anyway, I was trying to sync the playlist that I sync. I had added a couple of songs, but they wouldn't show up on the phone's playlist.
i duplicated the playlist in iTunes, marked it for syncing and tried again - still wouldn't work. I deleted both playlists from the phone, and they then both removed themselves from iTunes. Not sure why the phone is deleting playlists from the PC, but there you go. I was able to restore the duplicate playlist by Edit -> Undo Delete Playlist, but not the playlist I had duplicated.
This ended up syncing fine.
iTunes behavior is a bit odd. I only have one playlist that I sync to my phone, yet "Songs" under Library on my phone seems to show a massively long list of songs that I haven't sync'd. Most are indicated by a "Download cloud" icon.
Anyway, I was trying to sync the playlist that I sync. I had added a couple of songs, but they wouldn't show up on the phone's playlist.
i duplicated the playlist in iTunes, marked it for syncing and tried again - still wouldn't work. I deleted both playlists from the phone, and they then both removed themselves from iTunes. Not sure why the phone is deleting playlists from the PC, but there you go. I was able to restore the duplicate playlist by Edit -> Undo Delete Playlist, but not the playlist I had duplicated.
This ended up syncing fine.