The 'Export to CDN' in W3 Total Cache does not copy the "full images" over to CDN (I'm using subdomain as the self-hosted FTP CDN), only the WordPress generated thumbnails.
For example, I've added a image to media library:
WordPress creates the "thumbnails" automatically, named something like this:
When I use the "Export media library to CDN" the full images are not somehow recognized. Everything that is recognized moves OK (green), but all images on the list are the 300x300, 150x150, etc. thumbnails.
(W3 Total Cache version is 0.8.5.2)
[EDIT] I recently turned off the CDN, since I had to cleanup the subdomain, and this problem arised when I turned it back on and went to export stuff to sub-domain/CDN again. I think I did the earlier, successful export on WP 2.8.x or so. Now on the latest 2.9.2.