How to convert Reports from BI7 to BW 3.5 ?

Hi ,

By mmistake i have opened my BW3.5 report in the BI7 versition and saved the report in BI7.I need to convert back to BW3.5 from BI7 .

Could you please let me know how to convert back to the BW3.5.

Thanks a lot in advance.

Thanks ,

reddy