iTunes not syncing Voice Memos playlist to my iPhone 6
I am able to sync my voice memos from my iPhone 6(iOS 9.3.1) to my MacBook Pro(2009, El Capitan Version 10.11.4) using iTunes 12.3.3.17, and was,a few weeks ago, able to sync them back to my iPhone so that they showed up in Music. Now, no matter what I do, I can't get my voice memos to show up. I'm wanting to use voice memos in iMovie on my iPhone, but can't unless the voice memos show up in Music. iTunes even shows that they are on my device in my Voice Memos playlist, but it doesn't show up on my iPhone. Is there something I'm missing.
MacBook Pro (13-inch Mid 2009), OS X El Capitan (10.11.4)