Mac Outlook emails uploading continuously

I changed hosting for my domain.

My email account is setup as an IMAP account.

Before changing hosting, created my email account on a different computer with Outlook2010 as a POP3 account and downloaded the emails.

The changed the hosting.

All emails in the IMAP account got deleted.

Then I moved the .pst file into the MAC and imported the pst file in Outlook 2011.

Then dragged the imported emails into the inbox of email account.

Now the emails are continuously uploading into the server in a loop.

Is there a way to stop this?

Thanks,
Kula.