I had a set of netfilter rules set with iptables, but someone else told me to use system-config-firewall to add a rule for sharing files with Windows. (Samba) This rewrote the iptables rules file and I lost my own custom rules.

I have a backup copy, but am having trouble restoring them.

Edit: The server is Centos, I already tried to restore the rules with iptables-restore < /root/working.iptables.rules but for some reason the rules don't change.

What are you trying to do?
Trying to restore the iptable rules that I have in a backup file.

What have you tried in order to make it happen?
I've tried to modify the iptables file with vim, since the command iptables-restore was no help.

What results did you expect?
To get the old rules back.

What actually happened?
Nothing, when I run the command or edit the file by hand the file doesn't change at all. Maybe something else it's overwriting.