Removed those. Now I can't login to main 'network site'. I can login/logout of the 'domain mapped' sites.
I open the URL
http://dev-domain.uk/wp-login.php
Click the Google Login, it validates the Google authentication (this work's fine), the redirect URI from Google is setup and working fine too. No error there. The URL below appears briefly
https://accounts.google.com/ServiceLoginAuth
Login with Google ID/Password. Accepted. All good... Then the login box remains (e.g a loop) which was way I set those domain cookie values.
The following URL is left in the address bar and you are not allowed into the admin areas of the main site / network.
http://dev-domain.uk/wp-login.php?redirect_to=http%3A%2F%2Fdev-domain.uk%2Fwp-admin%2F&reauth=1
Does this URL look correct ?
What do you think could be occuring ?