2938370 - When using Business Rules I am unable to set Operator to Null - Recruiting Management

Can you set the Operator role to be equal to null using business rules? 

SAP SuccessFactors Recruiting Management 

Project Management and Engineering have confirmed that setting Operators to be equal to null is no longer supported using Business Rules. It has been decided to remove this functional as it was causing problem to occur in the approval process. 

RCM-77351 , KBA , LOD-SF-RCM-RUL , Recruiting Rule Issues with MDF Platform , Problem