When you replace an existing Voicemail Pro server with IP Office Server Edition server you must take a backup of all the settings, prompts and messages from the existing server. If the existing server is a Linux based server, you must use SSH file transfer to retrieve the backup files from the server. If the existing server is a Windows based server you copy the backup files on a folder in the server and then use the SSH file transfer to migrate the back up files to IP Office Server Edition server.