Insert just you Filezilla.xml (located on the Filezilla location) and upload it.
Then download the sitemanager.xml.
Close Filezilla3.
Replace your new configuration file on C:\Documents and Settings\YOUR_USERNAME\Application Data\FileZilla
Restart your Filezilla3 and go to the site manager.
Enjoy !
The source are available here.
No files saved, they are just convert for you.