I had moved the all fsmo roles from my original domain controller to new domain controller and had shutdown the original domain controller instead of demoting it. This was done some 2 years back. My new Domain controller is working just fine. Entries of the old domain controller are still in the metadata. Now we are installing a new application which tries to prepare forest and tries to locate the old domain controller to prepare it. Since it cannot find the old DC, the process fails.
My question is:
1. I can delete the Old DC from metadata using NTDSUTIL. However, when our exchange server and sharepoint servers were installed, Old DC was the primary DC at that time. Though after moving the roles to new DC exchange and sharepoint application are running fine. However, if i delete Old DC from metadata using NTDSUTIL, will it affect them in any way?
2. What if i bring up the old DC, which is down for last 2 years, and try to demote it. Is this a good idea?
If there are any other way, please let me know.