title: aws codecommit pr approval got overwritten
body: <p>I nnoticed that aws codecommit behave in a "weird" way</p>
  
  <ol>
  <li>I create a PR off a branch</li>
  <li>Team members approved the PR</li>
  <li>I push some code into that branch</li>
  <li>Approval count resets back to 0</li>
  </ol>
  
  <p>Is there a setting to prevent the approval count from resetting back to 0 when a commit is pushed? It also doesn't help that the Activity tab doesn't actually tracked what has happened (ex. PR was approved by someone before)</p>