title: Once I create a change set can I update the files in change set?
body: <p>I changed some files and created a new change set based on those changes. I did not deliver this change set. I have since updated the files that were contained in the original change set. These changes are appearing in 'Unresolved Changes' . Should it be possible to check in these changes to same change set ? 
  When I try to move the files within 'Unresolved Changes' to an existing change set the change set is not appearing in drop down menu in Eclipse RTC client.</p>