Buyer Workcentre personalized view is not displaying all the columns

HI All,

In Buyer workcentre -->Requisition -->personalized view, I have created a view to display creation date and sort by creation date. But after click apply and view, the creation.

1. Responsibility: Purchasing Super User

2. Navigate to the Buyer Work Center.

3. Select Requisition Demand Workbench

4. Click on the "Personalize" button

5. Select "My Requisitions" and click on the "Duplicate" button.

6. "Move" columns Requester, Supplier Item and Note to Buyer,creation_date to "Columns Displayed".

7. Sort by Creation_date desc

8. Apply changes.

9. Select the view "Test BWC"

But none of the added columns is displayed.. it showing only OU, requisition,requisition region,item/job,QTY,UNIT,PRICE,CURR,NEED_BY,assignment,Source,Options,Action.