As I understand, this data is already being retrieved by the SOAP call, but is being dropped by SHIM.
The cost center information is needed by customers for updating downstream systems (like training systems) for access.
Request originated from Gundersen Health Systems.
Are you sure this is something in the shim? I have worked with the WorkDay driver at a client, and I don't recall it having anything special in the shim. You should just have to add the relevant object classes and attributes to the filter if you want cost center data to be processed by the driver.