I have followed instructions and unchecked the box "Mark all expenses as billable" but each time we create an invoice, and add a customer job , the billable box is automatically checked, creating (once again) a slew of unbilled costs by job.  This is not a problem for the time.  Unchecking "Mark all time as billable" appears to have worked.  But now I still have material expense defaulting to "billable." What am I missing?