title: CRM 2011: How to update 'Modified By' field of closed case
body: <p>I have a workflow which automatically close the case after 7 days. But because it resolved by a workflow, Case's <code>Last Modified By</code> field is set to process owner. For reporting I want to set the <code>Last Modified By</code> equal to Case owner. </p>
  
  <p>Is there any way to do this?</p>
  
  <p>I think CRm don't let us to update closed case so I can't do this with post-operation plugin. </p>
  
  <p>Thanks</p>