How to prevent refreshing of BO Webi reports while going back from Child report to the Parent report in the same window

Hi,

I have a query in BO Webi reports. (Using SAP BusinessObjects BI Platform 4.1 Support Pack 6 Version: 14.1.6.1702)

http://www.sap.com/bi

How can we eliminate the refresh of report while going back from a child report to a parent webi report in the same window?

I have applied 'sRefresh=N' appending to my parent report's url. But still after going back ,the document automatically refreshes the data.

Also I have removed the Refresh on open option in document properties.

Do anybody know how I can see the same data in the same session while clicking on back ?

I have also tried some script to show the history which points to the previous page.But still it didnt work.

Note: It works fine when I do not have to pass any parameters .

Can anybody help me on this?

Thanks.