Messages in iCloud was working great for me. I don't know why Apple decided to delay it. But anyway... Since the feature was removed my iPad and iPhone have completed several iCloud backups, but have not resumed backing up messages like Apple said it should in the release notes. The iCloud backups for each device are just a few gigs, while my messages archive is nearly 20 gigs, so it's clearly not being included. Before iOS 11, messages were backed up separately by both the iPad and iPhone (and consequently used much more iCloud storage). Is this happening to anyone else?