Multisite domain mapping

Hi, I have an issue with two domains I want to map.

All my domains are mapped just fine, except those two will not map right. They keep on pointing two the primary hosted domain.
- dns settings are fine
- domains are parked ok
- admin dashboard domain/subdomain works
- visible site domain/subdomain works
- mapping with the plugin direct to the subdomain does not work (they point back directly to the primary domain)
- all my other subdomains work

I tried several times to do the process all over again with these two (dns, park, setup new site, map) but it does not work.
What can I try more?