Does iCloud backup create a new (duplicate) set of the files or does it only backup new files?
My iCloud at 50GB is now full. I am wondering if iCloud backup creates duplicates each time it backs up or does it do a backup of only new files. Also, is there a way to do a compare of file names to eliminate duplicates that may have been backed up such as photos that were backed up from two different locations/folders?
iMac, macOS Sierra (10.12.6)