After importing a PST file into Outlook, emails do not appear in the reading window.
When you load the exported PST file back into Outlook, you might not be able to view the messages.
Note: The email messages aren't lost, but they are hidden from view. To fix this issue, use the following steps below:
Go to your Outlook Data File Inbox that was imported
Then go to the menu bar and click the View tab
Click Change View > Select the IMAP Messages
This will then allow you to see those exported emails that you reimported in the right-hand window pane that was hidden.
Please see the example screenshot below of the steps
Video of the Steps
