Hi: I switch off "Documents and data" in Settings > iCloud for a while, because I was not interested in syncing and I was using my cellular data. Later I've wanted to turn that option on, to sync some Keynote presentations stored in iCloud... and the "Documents and data" option has simply disappeared! I've been very careful to not upgrade to iCloud Drive, so I don't understand why I can't re-activate "Documents and data". In my Mac, which runs Mavericks, I can see all my documents in the cloud. Again: I have not upgraded to iCloud Drive. Thanks.