I am trying to remove an old SBS DC that is no longer online. I was able to remove it from ADSS and ADUC but when I run the ntdsutil and clean the metadata I get the error in the attached file. The new server is 2016 and it is the DC and holds all the operations masters and is the GC. I can't remember if 2016 cleans up all metadata once the DC is removed from ADSS or not - I thought it did hence the reason I am getting the error??? I have also already manually removed everything from DNS for the old server.
Any suggestions if the metadata is still there.