You will be presented with Submit defect dialog. Depending on your configured defect tracker, your Submit defect dialog might be different from the below screenshot which creates a new defect to Rally defect tracker.
To submit a new defect, enter the required information on Submit defect dialog and click OK button to start submitting defect to your configured defect tracker.
To update an existing defect, select 'Update existing defect' option. Enter required information for the existing defect, e.g. enter Rally's defect id to Defect ID field in this example, then click OK button.