We currently have a test farm setup using SharePoint 2013 (SP2013) and would like to move the Document Libraries (Documents including their version history, created, created by, etc.) back to a SharePoint 2010 (SP2010) Farm. So NOT an upgrade process, but rather a downgrade.

Tried to Export the Libraries using Export-SPWeb and Import-SPWeb. The Export from SP2013 works fine, but as you can imagine the Import into SP2010 throws an error "The version of the package 15.0.0.0 is different from the current version this program supports, 14.0.0.0."

Any ideas on how we can achieve this process would be greatly appreciated.

Downloading to fileshare and copying back to SharePoint is not an option as we would loose all the version history, etc.