Hi,
If you do not want to change query then check wheather other infoobject is prsent in free charecterstic if yes the remove old IO and drill down with new infoobject that will give you required output.
Note: If you are aware about the data the I would suggest you need to modify report with correct IO in query designer that will resolve your problem.
hope it will help.
Regards,
Ganesh Bothe