GRC 10.1 - ARA - Mass Mitigation Upload

I am having issues in mass upload of mitigating controls for Rule IDs more than 300 ..

I have tried to do it using GRAC_UPLOAD_MIT_ASSIGNMENTS , but it is giving me error

Also I am not quite sure on the format of the file to upload .. I am using as below

System  RISK ID  Rule ID Control ID Valid from Valid To  Monitor  Active Role Name

Can you forward me any template to upload mitigating controls . When I try to download the existing one , the first column has entry as below , which I am not quite sure ,