Change 1000+ of WordPress Featured Images in 5 Minutes! › Forums › Questions and Answers › First image – featured image when 2 WP sites have been merged › Reply To: First image – featured image when 2 WP sites have been merged
After some research it seems that images with the subdomain ‘www’ in their paths were not included by the plugin. It is a difference between ‘seodaddy.co.uk’ and ‘www.seodaddy.co.uk’.
How many posts are without any featured image? If just some a manuall correction would make sense.