Syncing photos via iTunes is not supported when iCloud photo library is turned on.
I am trying to help out two friends. Both have an iPhone 6, and have backed up their iPhones to their computers in the past using iTunes. Both would like to start using iCloud for backing up their photos. When they go to switch this option on, they get the message, "Syncing photos via iTunes is not supported when iCloud photo library is turned on. ___ photos will be removed." Obviously, they do not want to lose any if their pictures.
Is there a way that we can somehow save those photos already synced? Do I need to go onto their computers and install iCloud and transfer their photos from iTunes to iCloud?
Please help!
iPhone 6