Transfer contacts and calendars from PST to OST agenda in Outlook

Hello,

I have a PST storage (POP) with my calendar and contacts.

Then I add a OST mailbox (IMAP) with a new email to delete the old PST.

I try to transfer via import/export contacts and calendar from PST to OST.

Export data from PST ok. Import data to OST ok. But when open calendar or contacts there is no data.

What am I doing wrong?

greetings,

Miguel