Moving Chargeback Server Database

I'm trying to move our Chargeback 2.5 server in stages and I'm having problems on my first stage; moving the chargeback DB.

The DB was copied to the new database server successfully, and I updated the four xml files with the new database server name.

Under the System Health tab of the web GUI I'm even seeing the newly updated DB server name under General Info>vCenter Chargeback Database.

However, when I try running the Chargeback 2.6 install to upgrade the DB connection test shows the old database server name and it is grayed out.

I've restarted the server after making the xml file changes, but still the same thing happens.

Any suggestions?

Thanks