Change 1000+ of WordPress Featured Images in 5 Minutes! › Forums › Questions and Answers › Future Featured Image › Reply To: Future Featured Image
Thank you for all the desired login credentials via email, Vicki. I migrated many WordPress sites from servers to servers in the past. So I can find reasons for errors fast.
Just copying media files into the uploads folder is not enough. The files must be registered in the database, too. The media data are stored like posts in the DB tables wp_post and wp_postmeta.
In your installation the data of the images are missing. Only the data of the images found in the media library are available. Maybe they were uploaded after the migration?
One reason of missing data can be an original CMS other than WP and the lack of a complete data conversion progress (from source CMS data to WP data).