How do you delete a decal across multiple configurations without editing each configuration by hand?

I've made a part that has a lot of configurations.  I add unique artwork to each configuration with a decal.  Unfortunately Solidworks 2011 defaults to apply decal to all configurations.  If I forget to change the scope of the decal application it is applied to 20-30 configurations.  How do I a.) change the default setting to "This configuration only" and b.) remove incorrect labels "en masse"?

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