SLA: How to reverse Payroll accounting when importing Labor costs into Projects

I would want to reverse the original account debited while running payroll, when importing the same to projects. However, I'm not able to pull the same accouting rules, as they are not visible in PPM. Also I tried creating mapping sets, but since they too have to use Payroll costing attributes, they are not visible in JRES of Projects.

How is this done elsewhere. It should be a standard practice to reverse the costs of original cost centre and book it with the projects to which the employee has booked costs