Resolution
If you set some domain as default for an IP with the Server -> IP Addresses -> Hosting -> Set As Default and wish to revet this back, use the command:# mysql -uadmin -p`cat /etc/psa/.psa.shadow` -nBe 'update IP_Addresses set default_domain_id=0 where ip_address="IP_ADDRESS"' psaIP_ADDRESS - Shoud be replaced by real IP address from the server.