On your server host, stop MS SQL services:
On the Start menu, click Run, type services.msc, then click OK.
In the Services window, right-click the SQL Server items, then select Stop.
Copy all *.mdf and *.ldf files to a location outside the product installation directory. The default location of these files is:
\Program Files\PlateSpin Migrate Server\Database
Restart MS SQL services that you stopped in Step 1.
Proceed with the upgrade, as detailed in Upgrade Procedure.