I noticed this same phenomenon with all three of the auto-syncing cloud storage services I tested: Apple's iCloud, Google Drive, and Microsoft's SkyDrive. Dur

I noticed this same phenomenon with all three of the auto-syncing cloud storage services I tested: Apple's iCloud, Google Drive, and Microsoft's SkyDrive. During testing, all three of those services incorrectly deleted files when the cloud service got confused about synchronization. So for the particular application I had in mind, I wasn't able to use any of them and had to write scripts to handle the synchronization myself.