Bulk Mapping of Custom Object Records to Eloqua Contact Fields

Dear Team,

I’d like to know if there’s a way to map custom object records to Eloqua contact fields in bulk.

I’ve reviewed some documentation and conducted tests, but I haven’t been able to map these custom object records with contact fields in bulk.

(Is uploading email addresses in the CDO, map the fields, and apply 'Map Data Cards' the only way for bulk field mapping?)

Could you please let me know if there’s an available method to achieve this?

Thank you in advance!

Eloqua: Custom Objects: "Save and Map" Not Mapping New CDO to a Contact Record (Doc ID 2559814.1)