Hey @challahan,
You may indeed be able to write code that automatically re-saves things after import – there are functions in WordPress core like wp_update_post() which would enable this, which you can learn more about here → http://codex.wordpress.org/Function_Reference/wp_update_post
I'd recommend reaching out to WP All Import's support for, hopefully, some insight from them as to why this import would be failing on that one specific field.
Cheers!