Failed Demotion of 2008R2 DC

I migrated from a 2008R2 DC to a 2016 DC.  All FSMO roles moved successfully.  All queries return the correct values.  When demoting the 2008R2 DC it fails at "Active Directory Domain Services could not transfer the remaining data in the directory partition DC=ForestDNSZone...... to the new 2016 DC.  If I run a cmd for dsquery fsmoroleowner, it shows an old servername that was in place long before I acquired this client, possible failed migration.  I have scoured the DNS and ADSEDIT and found noting referencing this old DC name.   I am unable to find the old DC how should I proceed?  Manual removal of the current 2008R2?  How should I proceed?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Britt ThompsonSr. Systems EngineerCommented:
You'll need to run a metadata cleanup using ntdsutil - - also, check AD and AD Sites and Services to make sure the computer account doesn't still exist
Joseph HornseyPresident and JanitorCommented:
Check out my post here from a few days ago.

Basically, follow the same steps, but look for your old server.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Seth SimmonsSr. Systems AdministratorCommented:
I have scoured the DNS and ADSEDIT and found noting referencing this old DC name.

you opened the DomainDNSZones context, looked at the properties of CN=Infrastructure and fSMORoleOwner attribute shows a valid server?
Joseph HornseyPresident and JanitorCommented:
Question satisfactorily answered
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.