Can't unset window shortcut

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http://askubuntu.com – I somehow set konsole to activate an open instance using ctrl+shift+t which also happens to be browsers default re-open closed tab shortcut. I want to unset this window shortcut on console but I cannot figure out how to do so. I've looked through the special window settings, special application settings and could not find anything there. I can temporarily unset the shortcut, listed as "Activate Window (Wallpapers:bash {Ctrl+Shift+T})", in the global shortcuts but when I restart my computer it will return. I even tried resetting all the global keybindings to default but that did not stick eit (HowTos)