Hi,
Recently changed the password for our steam account and updated the login details under System > Settings > Default Steam Settings.
Later came to realise one of our servers wasnt updating because the old login had been set in the game config, so i removed it, left it blank & hit "Update Existing Services".
Problem is out of the 3 services using that config only one started using the correct password, one is still using the old password and the other is using a random password i have never seen.
I also tested a different game which never had the password set in the config and its working fine.