The general process is the same, so long as the username/password/instance/DBname are all the same.
- shut down all vCD cells
- full back up of DB
- restore the DB into the new server
- take the source DB offline (or disable the account vCD uses to connect)
- run the configure script on 1 vCD Cell
- you should be prompted for DB connection details
- see if everything comes up with just 1 cell
- if this works fine, then repeat on other cells.