If Blackbaud hosts your database: Contact Support and reference this article. 

Otherwise, if The Raiser's Edge is installed locally, follow the steps listed below:
  1. At the workstation, edit the registry and browse to HKEY_LOCAL_MACHINE\Software\Blackbaud\Raisers Edge\7.0.
  2. Right-click the InstallSource key and select Modify.
  3. Change the value to the location of the Deploy folder on the new server.
    e.g. \\NewServerName\ShareNameOfDeploy\
  4. Exit the Registry.
  5. Located and rename the "BBUpdate.ini" file (default location is C:\Program Files\Blackbaud\The Raisers Edge 7\.
  6. Log into the database and a new BBUpdate.ini file is recreated with the new server's information.