Remove the drilldown functionality/Expand all rows when report is exported in PDF format

All,

I know that when the report needs to be exported to the PDF format, you would first have to expand all the groups and then export it to PDF only then it would show all the rows expanded when you open the PDF file.

But, my question is, say, if we have a lot of drill downs in the report, so, I don't want the user to manually go and expand each each row group and then export it, so, is there a way that only when the report is exported to PDF format, then I want the report to be in the expanded format (with no drilldowns) other wise when its exported to excel I don't want to do any changes, since the drilldowns work fine in Excel.