Did my last message make sense? Ideally – if the filename convention (and/or multiple filenames; comma-separated) could be figured out for custom fields — this sounds like it could also enhance other areas. For example, if you are importing a CSV to update posts — it’d be awesome if you could specify a post title instead of ID (using the same logic – if it finds two posts with the same name, use the first it finds) and pull that over to custom fields as well (specifically in my use-case for ACF, but other Custom Field plugins like Easy Custom Post Types http://codecanyon.net/item/easy-custom-content-types-for-wordpress/234182 could also benefit as well). Let me know what you think. Thanks!