How to control the Cognos exported excel file name

[spicity]

Hi,

I am facing the issue like, the user is trying to export the report data into Excel 2007 format and after that trying to save the excel output file into their local machine. While saving the file by default there are some unknown characters(like Alpha Numeric) are adding along with report name at the end of the file name.
For your reference, please see the attachment.

Can you share your views how to restrict those unwanted characters.

Thanks,
SPI