I.R.I.S. Cardiris Pro 5 - Manual (Page 98)

Chapter 8 – Exporting contacts
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
Then click Configure at the bottom of the window.

Enter the credentials of your Google account and click OK.

Then click Export to export the cards. A Cardiris group
containing your contacts will be added to the Contacts section of
your gmail account.
Note: if your contacts contain categories, a separate group will be
created as well, based on the custom field. E.g. Cardiris - Associate
in the image below.