Hi
This should be the step to migrate to a new wsus installation with your old
data / configuration
1. Install WSUS Server with same configuration as old one.
2. Detach database from old server and attach (Before that delete the
databse which is created during installation) it to new server.
3. Copy the Content dirctory from source server to new server.
4. Shutdown the old server and rename the new server name as old server
name.
5. Since group policy is configured for auto detection in every 3 hours so
client computer will report aumatically.
6. Create group as it was in old server and move respective computers in
group.
Best Regards
Rico Raja