I have tried everything and do not see any way to add additional time entries to an existing invoice.  There used to be the arrow on the side mentioned above, but this is gone.  I have clicked on every possible option, and there is nothing.  Please tell me exactly how to do this.  My sweet bookkeeper passed away unexpectedly last week, so I am in the middle of month-end with no way to update invoices.  Please advise ASAP.  Thanks.