I am trying to figure out how to move ALL emails from one folder to another (within the same mailbox) in Exchange Online.
When we did a PST import to O365, New folders such as "Inbox_0" and "Sent Items _0" were created. The imported emails did not merge into Inbox and Sent Items as we had expected. I need to move the emails in those folders to the "main" Inbox and Sent Items folders.. It should be a simple thing.... or so I thought.
I know it can be done with Outlook, but takes forever that way when dealing with thousands of emails. I tried OWA, thinking that might be better, but in fact its worse, as there is no option to MOVE emails, once you "Select All" in a folder. It's just not feasible to select batches at a time, when you're dealing with thousands of emails.
Is there a way to do this in Powershell? I tried using the "Search-Mailbox" Powershell Command, which looked promising, but it would not le me use the same Identity as both a Source and Destination.
Any advice would be most appreciated. Thanks very much.