How to get Pods working with WP All Import plugin

I am not aware of a currently existing off-the-shelf solution for importing all fields types of Pods, such as relationships and files, using WP All Import. For a custom solution, one would likely be best off by starting with PHP’s fgetcsv() function and a WP_CLI command. Starting with that, one can then use various Pods and WP core functions such as pods_attachment_import() or wp_sideload_image(), Pods save(), wp_insert_post(), update_post_meta(), etc.

Great — hope that helps! wp_set_object_terms() may also be helpful if using WP Core taxonomy connections.