Yes, it took many tools to determine where the glitch was. Thought it was my virtual host, but using intodns.com, your link, and finally a dig @mydomain… on the MIAB instance pointed directly to MIAB not releasing that secondary nameserver despite having no settings containing that nameserver anywhere. I even looked through all the files I could find related to Bind and NDS, and still didn’t see it. The good news is that it is fixed now. The bad news is not knowing why so it can be more quickly fixed if it pops up in the future for someone else.