In my case once I save node with images and images data(alt,title)I can see them in the view node. But after few hours I noticed those images missing with image data. When I check file_usage table I can see entries. But in file_managed table there are no particular entries.
This doesn't happen all the time. In some nodes it disappear all the images and in some nodes(same content type) it disappear few images only.
Images uploaded via image field.
How I can resolve this? Please help.