How to restore Client settings to group default?

I’ve added custom settings to one of the clients, but now when I’m try to remove them, the client remains tagged with a * on the client list. In the 2.4 version it was easy and the client was greyed out when not using custom settings, but in the 2.5 version I see four different icons/choices next to the “Reset” tag and none of it removes the * tag on the client list?