If you would like to import custom attributes/fields from Magento, you will need to input the attribute code in the Field Mapping settings in GoDataFeed.
To import custom attributes:
- Visit Catalog > Attributes > Manage Attributes in the Magento admin panel and find the exact attribute code
- Find, copy and paste the desired attribute code(s) into your GoDataFeed account (Products > Settings > Mapping). Use the exact attribute code of the field from Magento that you are trying to pull in.