Prepare Private Folder Content before migration
The migration will copy over all emails that are not in private folders or your archive. If you have a private folder, which is designated by a folder with a figure on it, the contents must be moved to a non-private folder.
You can do this by creating a new folder, selecting all the emails in the private folder, and moving them to the new folder.
To Recreate a new Folder, Right Click on “Folders” and select Create New.