I know if I upgrade to iCloud Drive then iCloud is "gone." I have my outlook contacts and calendars synced through iCloud for all of my Apple devices and even Outlook on a PC. Will my syncing still work or do I have to do something differently? What can I expect if I "Upgrade" to iCloud Drive? I have been hesitant to upgrade for fear my syncing will get messed up. Thanks in advance for any help.