I am trying to move sites from one server to another in a Multisite setup.
Both servers are Ubuntu 12.04 with WordPress 3.5.2. Prior to the 3.5.2 update I could go to a subsite on server1 and export all content and import it to the new subsite on server2 and it would import all content no problems.
After the 3.5.2 update I get all kinds of errors with "Failed to Import Media - Remote server did not respond" to and from server1 and server2. I have tried importing/exporting from each server in both directions.
I have a third WP multisite install WHICH WAS NOT updated to 3.5.2 and it can import media files to a subsite from each of the two 3.5.2 servers with no issues. However, I cannot import from the NON3.5.2 server to any of the 3.5.2 servers.