Recently, I upgraded to a new iPhone7. However, every time I've tried to upgrade in the past, keeping old playlists on the Music app has not been easy. I usually Restore from Backup via iTunes instead of iCloud, because I have too many photos that I keep on my phone. However, for some reason, the playlists never seem to restore using this method. This is especially true for playlists I've created on my iPhone. If I create them in iTunes, I can sync them to my phone, but never have been able to do so in the opposite direction. We also do not purchase all our music via iTunes, we more often buy our music via other sites.
In the past, I just started from scratch and recreated new lists. This time I have several playlists for workouts, for running, for other listening moods. I decided that once, and for all, I would figure out iTunes (haha). After googling for help, I discovered that information is piecemeal, so I am blogging a detailed set of instructions. Of course, many of my friends have flat out given up on iTunes Music, using services such as Spotify, so perhaps I'm just clinging to old technology, but here ya go: How to Move Playlists via iTunes.