I recently renamed several sites to align with infrastructure changes made on the back-end which include metadata cleanups for legacy child domains and DCs. (Link below)
https://social.technet.microsoft.com/Forums/windowsserver/en-US/2f2d01fa-3eb8-4b9e-b9ac-fa42cbbdad00/unable-to-remove-child-domains-windows-2008-r2-functional-level?forum=winserverDS#fcc5c567-f684-4d39-bef3-8a3deb760f6d
After renaming the sites I noticed the old site names and SRV records are listed under _msdcs.domain1.com and other containers.
Question: Can I safely remove the old site names since the new site names and records are available?