Can Burden Generate Separate Expenditures as Billable and Nonbillable?

Summary:

We are capturing raw costs on task number 1.0 which is set as a billable task. We have setup the burden costs to generate two separate expenditures (Indirect Cost and Indirect Cost Share) based on percentages. Is there a way to generate the Indirect Cost expenditure as billable and the Indirect Cost Share expenditure as nonbillable?

Content (required):

We tried to use the project-level transaction controls; however it appears that when importing system generated burden costs, the import does not consider the transaction controls. And both expenditures inherit the billable setting from the task number. Since the burden costs are system generated, we cannot update the expenditure from billable to nonbillable.