title: Regarding "Conflicting changes to the role" Exception
body: <p>Actually I am getting an exception</p>
  
  <blockquote>
    <p>Conflicting changes to the role 'TableName' of the relationship 'DataModel.FK_TableName_RelateTableName' detected</p>
  </blockquote>
  
  <p>when ApplyChanges method is called from the ObjectContext. I dont have any idea what this exception is all about. I just wanted to know the cause of this exception.</p>