To protect the device from any potential trouble, CopyTrans Manager automatically detects if iCloud Music Library is enabled on the device and kicks into a read-only mode. For full read-write support in CopyTrans Manager, disable iCloud Music Library on the iPhone by following the steps below.
Navigate to the iPhone Settings.
Toggle the “iCloud Music Library” switch to the OFF position.
NOTE: you can only see and turn off the iCloud Music Library option if you have already joined Apple Music or iTunes Match.
You will now be able to use the full set of CopyTrans Manager features with your iPhone, iPad and iPod Touch.
What does Apple Music do to my iPhone library?
When you enable iCloud Music Library on the iPhone, the local iPhone songs are matched with Apple Music database. Your library is then seamlessly populated with DRM-protected copies of your songs originating from Apple Music until you choose to disable iCloud Music Library.
Therefore, back up your music. We strongly recommend backing up the physical songs and videos that exist on your iPhone before (if at all) you resort to enabling iCloud Music Library or Apple Music on the device. Okay! Let’s back up my iPhone library