Republish from History in Report Viewer
In Report Viewer, you can use your job history to republish data.
On successful completion of the jobs that save data for republishing, you can republish data using any of the supported output formats for the layout templates included in the report. You can apply a new layout, choose a different output format, or export the report. Because you're using the data retrieved from a previous report run, you can't update the parameters.