Looked in to getting the licensing sorted but it turns out that it isn't so easy to "move" ghost client licenses. The info I had before is for an older version of the ghost console and doesn't work in v8. So...
It looks like I'll need to rebuild the DB from scratch, but it shouldn't be done until I'm finished deploying all the new machines. Just a guess, but it'll probably take a few hours to do it.
Instructions from here:
To test whether the database file is corrupt

1. Close Ghost Console.
2. Stop the Ghost service:
   1. Click Start, and then click Run. The Run dialog box appears.
   2. Type:
      
      C:\Program Files\Symantec\Ghost\ngserver.exe -stop
      
      and click OK. The drive letter and path might be different on your computer. This stops the Ghost Console Services.
3. Find the SymantecGhost.db or NortonGhost.db file and copy it to a safe location.
   • The database file for Symantec Ghost 6.5 Enterprise Edition and later is SymantecGhost.db. The default location for this file is the \Program Files\Symantec\Ghost\db folder.
   • The database file for Norton Ghost 6.0 Enterprise Edition NortonGhost.db
   • Norton Ghost 6.0 Standard Edition does not use a database file.
4. Rename the file SymantecGhost.db or NortonGhost.db or delete it from the hard disk.
5. If you have Symantec Ghost 7.5 or 8.0, copy the following blank database file to the Ghost Console computer:
   download this
6. Restart the Ghost Service with either of the following methods:
   • Restart the computer.
   • Install the service:
     1. Click Start, and then click Run. The Run dialog box appears.
     2. Type:
        
        C:\Program Files\Symantec\Ghost\Ngserver -install
        
        and click OK, and click OK again. The drive letter and path might be different on your computer. This installs and loads the Ghost services, NGServer, and NGDB. You do not need to restart the computer.
7. Open Ghost Console. The Console no longer displays configuration information. If the Ghost Console still shows configuration information such as Tasks and Image Definitions, restart the computer and then open the Console.
8. Determine whether the problem is resolved. To find out, you might need to add configuration information, such as new Tasks or Machine Groups. When you add configuration information, Ghost 7.0 and earlier create a new database file. Ghost 7.5 and 8.0 add the configuration information to the blank database file that you copied to this computer in step 5.
   • If the problem is resolved, the cause is likely due to corruption of the database file. Recreate the configuration information. See the section "To rebuild the database."
   • If the problem is not resolved, then the problem is not due to corruption of the database file. In that case, replace the new copy of the database file with the backup you created in Step 2.

To rebuild the database

1. Follow the steps in the procedure "To test whether the database file is corrupt." That procedure creates a new database.
2. Click on Help and reregister the Ghost Console. Use the same information that you used when you did the original registration.
3. Recreate the configuration information.
4. Recreate the Tasks.