Hi, @lamplightdev, please add the domain in this case (
blog.lamplightdev.com) to the custom domain to the new site (found in the Netlify web app at Site Name > Setting > Domain management > Custom domains).
The NETLIFY (and possible NETLIFYv6) record won’t change but the domain name (or names if you add more than one) will start serving the new site.
To summarize, as long at the site is on the same account as the DNS configuration is, it is safe to ignore value for the NETLIFY type records. (This is part of them being “system” records - internal alias records Netlify uses.)
If you still want us to delete the old records we can but it will work even if they aren’t deleted. Do you still want us to delete them?
Again, we will if you want us to. Also, we need to do this before you add the domain to the new site. If we delete the domains after you add them to the custom domain settings on the new site, the domain names will need to be deleted there and then added back again a second time (which will create new but different NETLIFY and - possibly - NETLIFYv6 records).