Search Folder Question

Under Search Folder I created a search for June 2013 updates.  I had this look back 2-weeks.  I created this in June so it had all of the June updates.  Now, it is 8/15/13 and this same search has all of the July and Aug updates too.  Now, I've noticed that my Update List for this same Search only shows the June updates.  Why is that and how do I force my search to only show me the June updates?  

I am trying to update our Workstation Cumulative Deployment but we only want it updated through June, not July.  We're always about 60 days behind so I only need up to June.

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mqh7