I will re-check to make sure a Featured images is set. In the event that there are some missing, and I then add featured images, do I have to run the whole generator all over again? Or will it automatically update the missing thumbnails?
If I use the Auto Post Thumbnail will that only work with the missing ones (i.e. will it replace each image – even the working thumbs now – or just the missing thumbs with working ones)?
Thanks for your help!