So a friend has created a playlist in iTunes on their phone and has successfully synced it with their MacBook Air . All good!
He has then closed his MacBook and when he's returned to it later today a load of the songs in the playlist have disappeared but only on the Mac, not the iPhone.
However, he now doesn't want to just sent the iPhone again in case it syncs the current MacBook content to the iPhone instead of the full iPhone playlist to the Mac if that makes sense.
Where have they gone and how do we get them back and both the Mac and iPhone content the same?
And how do we stop the Mac and phone having trouble like this again?
Thanks,