Installing the ADvendio package will create a standard mapping for you which you can customize to your needs. Also please map the fields you have newly created to export data correctly to XML.
Mandatory Mapping
Navigate to Setup > Develop > Custom Settings > ImportExportMapping > Manage
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*Note: Please use your own OVK sender ID.
Custom Field Mapping
You can also map your own fields by matching the fields in the custom setting with your ADvendio fields.
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