To access the "Query String Items to Ignore" setting click Site Settings which is located under the Settings menu. Then click Site Import Settings. To save the setting click Next twice. If you want the change to take effect on future statistics select Do not re-process. If you wish to re-process your historical statistics using the new settings click Re-process statistics. Note that re-processing your statistics may take a very long time depending on the volume of statistics to be re-processed.To complete the process click Next one last time and then click Save.