Manufacturing Planning Availablity using Forecast

This Navision 4.0 user has implemented a forecast, and can successfully create productioin and purchase orders in manufacturing from the planning worksheets. The problem is the Projected Availability report (object 99001048) does not show any requirements that came from the forecast. So - it shows a projected balance which includes the receipts that were scheduled because of the forecast, but it does not show any consumption of the demand from the forecast. (so the boss is wondering why they have such a large projected balance). Is there a report which will net out also the demand from the forecast? Has anyone modified this report (9001048) to include the forecast?