Transferring Costs from P6 to QCS

When working with the Army Corps of Engineers, they use a program called RMS, Regional Management System, or QCS, Quality Control Management, for the contractor.  When importing a P6 schedule into QCS, using an SDEF file, my costs are not being imported.  I currently put my costs into the expenses tab for each activity, add a new expense item, and then enter the cost into the budgeted amount.  Is this not the correct way to cost load if you want the costs transferred over to QCS?