How to delete compressed request in sap bi 7

Hi Experts,

I have 4 requests in one of my Info cube and i compressed all the requests, due to some reasons i need to delete 2 request only.

In 3.5 we have option "Request Reverse Posting" but in BI 7 i didn't find out that option, so how can i solve my problem.

I know that we can delete entair data in Info cube and we can reloaded required data, but i dont want to delete the rest 3 requests. I need solution with out delete the data.

Please give me solution.

Thanks & Regards

Venkat