Actual Hours Summary not matching Sum of Burden Hours

Having an issue where the JobOper.ActSetupHours field is not matching the summed qty of the Setup LaborDtl.Burden hours. The actual setup hours field pulls in either the summed Setup Earned Hours for the operation or it will be the summed Setup Burden Hours plus the summed Setup Earned Hours. This is not effecting every operation and I cannot find a link between them. It also happens for open and closed jobs. Has anyone encountered this issue before?