Updating the Primary Contact in Accounts through imports

Hi

Thank you for your responses to my earlier question.

I have another one for you

This time I want to update the Primary contact for over a 1000 Accounts, from the current contact to another within the Account, due to an import issue.

The background to the issue is that due to an error in the import flat file several accounts were pointing to the same contact

After correcting and re-importing the flat file I was able to establish the correct account - contact association.

However, the re-import did not change the Primary Contact in the account but instead created a second contact for the account.