ios 8.4 got rid of my custom ringtones

Anyone have any idea how to get custom ringtones back into the options under sounds? I had a whole bunch of ringtones I had made years ago from clips of music on my iTunes, but once I upgraded to 8.4, they seem to have disappeared from Sounds. They show on iTunes under Tones when I plug my device into my computer, but trying to sync up does nothing for getting them loaded back onto my 6Plus. Any ideas?