Cannot add a song to my iPhone
I got this message when trying to add a song to my iPhone using Music:"Some files were not copied to the iPhone “iPhone” because Cloud Music Library is enabled on this iPhone".
Since I don't have a Cloud Music Library but just an iCloud Music Library, I searched high and low and it seems that - apart from using third-party apps - the only way to transfer a song (not bought at the iTunes Store) from the Music library on my computer to my iPhone (iPhone 12 Pro Max running iOS 15.4) is to disable Sync Library. However, this will remove Apple music content from my device.
My question is: if I disable Sync Library, transfer the song in question and enable Sync Library again will the songs I had previously downloaded to my iPhone be automatically re-downloaded?
TIA