I just tried this, converted to icloud, restored to my new phone, worked great. Now I go to sync up my music and it wipes my phone ... is there a proper way of doing this that I may have missed? In itunes sync to icloud was checked.
Just go to your iTunes and make sure you check the box to not sync when connected. Once your connected go to music and just click sync music. It will just upload all your music and not effect anything else. I just completed this process