Here's a weird problem.
I moved a few sites from Multisite instance A to Multisite instance B. I did this through the database and made sure nothing changed but the url from subdomain.domain.com to subdomain.domain2.com
I ftp'd down the blogs.dir files and ftp'd them back up on the new server. Everything works find except the link to featured images.
On the Multisite instance A the url output by WordPress to the featured image is:
On the Multisite instance B the url output by WordPress to the featured image is:
notice the extra /sites/121 in the url.
I checked the upload path under Network -> Sites -> and they are exactly the same
Also I noticed that WordPress or something is creating the following directories sites/121/2013/11 even after I delete them.