Item Cost Element Setup with Negative Rate or Amount and Unit Cost

Is it possible to setup an item cost element with negative rate or amount and unit cost in Cost Management?  and be able to transfer this cost to Projects?

Example:

Item #: 2376700

Material Cost Element:

- Sub-Element: Material

- Basis: Item

- Rate or Amount: 1.2

- Unit Cost: 1.20000

Material Overhead Cost Element:

- Sub-Element: Terms

- Basis: Total Value

- Rate or Amount: -.05

- Unit Cost: -0.06000

Material Overhead Cost Element:

- Sub-Element: DOMFRT

- Basis: Total Value

- Rate or Amount: .03

- Unit Cost: 0.03600