Syncing itunes library to new phone without deleting music on computer
I have looked through all related threads and have not so far found a respond I totally understand. I have a replacement iphone and want to sync it to my itunes on my laptop so I can have the songs on my phone. When I try to, I get the message: Syncing “iPhone” with this iTunes library will replace media from another iTunes library on “***'s MacBook Air”.
Does this mean once I sync to the phone all music will be deleted from my laptop? I have tried to select the option to manually transfer music and get the same message.
Thank you
MacBook Air 13″, macOS 10.12