I’ve just switched to a new computer and configured Outlook with my POP3 account which automatically created the Inbox, Drafts, Sent Items, etc… folders listed under my POP3 email address.

I’ve been able to reconnect to my pst-files (outlook.pst and archive.pst) via:
File-> Open-> Open Outlook Data File

This successfully imported my Personal Folders, but listed them in a separate section below the email titled section rather than merged them.

I then tried running the Import and Export Wizard, but it displays a window showing:

“The Outlook data file (.pst) is already in use in the current profile”.

How can I merge my pst-files restored from my backup with the newly created folders under my email address?