SD+ migration

SD+ migration

I want to migrate my servicedesk to  a new server

From:
ServerA
Windows server 2008 32

To:
ServerB
Windows 2012 R2 64

I have upgraded SD+ on ServerA with the latest SD+ versions and installed the latest version of SD+ on the ServerB both running    9.3  Build  9300

What process do I need to follow to migrate the SD+ from ServerA to ServerB. It is running the database on an external SQL database.

The ServerA is running a 32 bit version of SD+  but the new ServerB needs to run on the 64bit version

Is there any documentation to follow to carry out this process

                  New to ADSelfService Plus?