Indirect cost (SFA) for Cost Share transactions

Hi,

Is there any way to circumvent the issue we are having for SFA (indirect cost) related  to Cost Share transactions? There are cases where the cost share requirements apply only to direct cost; in other words, sponsor dictates that SFA cannot be included in c/s expenses. However, since the grant itself (sponsor's funding) allow indirect cost, all transactions, regardless of being regular or cost share transactions, are generating F&A since there is only one F&A rate assigned to the grant and this rate applies to C/S transactions as well. So, the question is if there is a work around to