title: Magento : Mass update to 'use default value'
body: <p>I need to set a couple hundred products attributes to 'use default' value within a certain store view. How can I do this?</p>
  
  <p>Also, due to the reason that I have more than two storeviews, the method of setting general attributes to 'global' and then back to 'normal' is inefficient.</p>