Move mapped domain to another domain

I have two networks with subdomains and i'm trying to move a site that was mapped to the wrong network. I can't seem to undo this incorrect mapping. I've change URLs in both databases to reflect the new, cleared caches, uninstalled the plugin on original network, commented out sunrise.php in wp-config, deleted sunrise.php, removed any Cnames or redirects, cleaned up htaccesses, deleted original site, ...

What else am I missing?

The subdomain is looking for the original network, not the new one.