I selected the music from my iPhone 6 that I want to transfer, and I'm given the option to transfer the music to folder, but the option to transfer music to ITunes is greyed out. How do I fix or work around this?
If you have tracks selected in the main window or a playlist selected in the left panel, and the Transfer to iTunes is grayed out in the Transfer from Device menu, that means those songs are already in iTunes, and they should have green checkmarks next to them.
iExplorer has duplicate detection by default and won’t transfer tracks to iTunes that are already in your library to avoid having duplicates. This can be disabled in iExplorer Preferences if you’d really prefer to have more than one copy of the tracks in iTunes.