Why is there a discrepancy between the local and server folder size on the mailbox in Office 2016 (Office 365)? I have made sure All items are being download, and full content rather than headers only.
I am migrating all these folders into a new mailbox, but I'm concerned something is being left on the server that I'm not seeing in Outlook. There are hundreds of folders so I can;t go through them individually, but most of them are different. It's not like one big folder missing.