Both blanket sales orders and production forecasts represent anticipated demand. Therefore, they are both shown in the Forecasted Projected Inventory field if quantities from either type of demand exist on the period start date.

Quantities on production forecasts or blanket sales orders are only shown in the window if you select a value in the Forecast Name field or if you select the Include Blanket Sales Orders field on the header.

The quantity on production forecasts or blanket sales orders that moderates the inventory figure is shown in the Forecast field. The forecast quantity that remains to be consumed from the selected forecast is shown in the Remaining Forecast field.

Reference