Transferring User Accounts, Domain Names and Web Sites to Plesk Panel
You can transfer data (user accounts, settings, Web sites and e-mail) to your Parallels Plesk Panel from other hosting servers managed by earlier versions of Parallels Plesk Panel or other Web hosting software.
Data transfers from Windows-based servers to Linux/Unix-based servers are not supported by the Migration Manager function available from the Parallels Plesk Panel; however, you can transfer data from a Windows-based server to a Linux/Unix-based server by backing up data on a source server and then restoring them on the destination server using the command line backup and restore utilities.
Go to Home > Migration Manager (in the Help & Support group).
To check if there are any updates for Migration Manager components, click Synchronize. These updates may include files of migration agents that enable support for transferring data from hosting platforms other than Parallels Plesk Panel.
Click Start New Migration.
Leave the Transfer data from another server option selected, and specify the following options:
The source server’s address. Specify either the IP address or the host name of the server, from which you want to transfer data.
The login name and password used for logging in to the source server.
Select the type of operating system running on the source host. (This option is available if you are using Parallels Plesk Panel 9 for Windows hosting platform.)
Specify the path to the directory where temporary files will be stored.
Specify whether you want to transfer all data related to user accounts and domains from the source server, or only specific items.
Select the data compression option, if you pay per the amount of transferred data, or if you want to save bandwidth. Data compression saves bandwidth, but consumes more disk space.
Click Next>>. The migration manager will connect to the specified server and gather information about the business objects of the source hosting platform.
If you are transferring data from hosting platforms other than Parallels Plesk Panel, select the version of the migration agent that must be used and then click Next >>. Parallels Plesk Panel automatically selects the appropriate agent version; however, if data transfer fails, you can try selecting another version of migration agent.
Source : parallels.com/Plesk/