Stopped NTFRS Services on both the DCs
>Took backup for Policies and Scripts from old DC
>On Old DC
- Under Registry Set BurFlag value to D4
- Started NTFRS Service
- Eventually got Event Id: 13516 and Got rid of JOURNAL WRAP ERROR
>On New DC
- Under Registry Set BurFlag value to D2
- Started NTFRS Service
- Eventually got Event Id: 13516
>Demoted Old DC