Thank you @djay. I was able to get collective.importexport working.
@dianezhou96 great. let me know if you have any feedback on the UI or functionality. It's designed to be a generic tool doing bulk updates of content from csv data, as well as exports and reimports again or moving between sites. It is beta however so any feedback is welcome. In the future I'd like to add a zip file format so file data can included, and the ability to handle internal data structures for non simple fields.