Transfer FileZilla Server settings is simple and very quick. Just make sure you follow the steps as described below or else it might not work:

1. Copy “C:\Program Files (x86)\FileZilla Server\FileZilla Server.xml” from the original FileZilla Server (so the settings you want to copy from).
2. Stop FileZilla Server’s service on the destination server.
3. Make a copy of the current config file [C:\Program Files (x86)\FileZilla Server\FileZilla Server.xml] (name it so that you know it’s the previous configuration).
4. Paste the FileZilla Server config file that you have copied on Step #1 in “C:\Program Files (x86)\FileZilla Server”.
5. Start FileZilla Server’s service on the destination server.

Note: if you’re running a 32bit version of Windows, then the path would be “C:\Program Files\FileZilla Server”.

When I had to transfer FileZilla Server settings across two servers, I didn’t stop the service and it didn’t work (even after restarting the service afterwards) that is why I’m suggesting you to stop the service prior copying the new config file over.