Import2 supports mapping of custom fields data for your Trello cards import. Include data for your custom fields in your CSV file to be uploaded into Trello, using Import2 simple mapping step.
1. Connect your Trello account
2. Upload your CSV file containing Trello card custom field details
3. Complete the field mappings, selecting the custom fields from the complete list of field options from your Trello account
4. Start the import and see the results in Trello