There is an issue in the Administration section of the TicketMonster example when it is generated using JBoss Forge. Deletion of performance dates and ticket prices does not work from the Edit Show screen. When you perform the delete operation, the deleted items disappear; but when you click the 'Save' button, the deleted items reappear. The root cause of this issue is in the implementation of JBoss Forge and not in the TicketMonster example. No workaround for this issue is currently known.