srv records in a Samba AD

In a debian samba server environment a second domain controller was added.
The plan is to move over to this new one, and later add another one.
I want to be sure it all works fine, though looking in DNS.
I noted that all service locater records still point to the old domain server.
Despite we did a role transfer to the new server

I’d assume they should point to the new DC or at least both.

I’m curious how it should be as i’m not sure about how samba handles this vs windows.
I got a windows background and samba is kinda new te me.