Import More Fields for Custom Taxonomy

Hello @bottlecapnapkin, Make sure you have created the custom fields and taxonomies and assigned them to your specific post type.
Then only it will show the fields which you have created in the mapping section, kindly map them and import the record. Please check the below link,
https://www.smackcoders.com/blog/adding-custom-fields-data-wordpress-free-wp-ultimate-csv-importer.html

Thanks for the response. I do have the custom taxonomy assigned to my custom post type. After I upload the csv and get to the Import tab, the dropdown shows my custom post type, but under taxonomy, only the standard category or tags are available to be selected.

In the article you referenced it talks about the pro version of the plugin. Do I need to purchase the pro version to just import the custom taxonomy data?

Yes @bottlecapnapkin , this is one of the functions that are restricted in the free version. To use this feature, you must purchase a premium product.