Purge old computers

I have recently scrubbed my old DNS records and would like my SOA Network display to reflect the change. Is there anyway to update the computers?

(For instance, let’s say I used to have a computer named “student” but have removed it from my environment and deleted the DNS record. How do I get that computer purged from SOA without manually deleting it? I have quite a few.)

Thanks!

…anybody? :-\

Ditto!!!