I decided to migrate from Dropbox to iCloud Drive (not sure it was a good idea anymore) and copied all my files from one to the other on my Mac. A number of files were uploaded properly, by many of them see to be on hold with a "waiting" status below the filename: I noticed that for these not uploaded files if I rename them, they then start uploading. I have left the computer on for over 12 hours and I don't think there is any movement. I have decent enough broadband - 12Mpbs upload speed - and yesterday uploaded a 4Gb file to iCloud Drive in about an hour; and what I am pending are small files which altogether are about that size. Anyone know how I can trigger the sync in a better way than renaming each file individually? Note: I definitely have enough storage on iCloud to store all these files.