In similar migration, I found pitfalls in Rogue System Sensors. It was a known issue in 4.0, not covered in that documentation.
Be prepared to delete all and set them up again if the IP address or name of the EPO box changes.
Similarly remote repositories. Again, deleting from EPO and recreating sorted it.
Maybe it's no longer a problem in 4.5, but . . .
Hope that helps.
Be sure to keep the servername (and ip if possible).
Also the ePO Server must be installed with the same patch level as the source system.
Then migration with your link is no problem.
PS: If you plan to use SQL2008R2 be sure to upgrade to ePO 4.6 before.
you may also want to review KB71078 & PD23051.