Flat rate pricing

Before switching to flat rate pricing I had job income broken down into categories.

2 main categories... Install & Service..... and each main category had sub-categories ... Boiler, Furnace, AC, DHW, Gas, Other.   In QB income was divided into each of these categories based on the Department with a 3rd main category for JobIncome:Materials.

Now that I've switched to flat rate pricing, ALL my income goes to JobIncome:Materials.  I would have thought that the Labor rate calculated into the flat rate prices would have still gone into their respective categories.

Under Company -> Enter Departments... the Income Account is still set but again all the job revenue goes to QB as JobIncome:Materials