jQuery Grid Plugin - jqGrid

Greetings,

First, thanks for all of the great work!

Using the following code to load any number of AJAX request's what is the optimal method to preserve grid results from previous requests? Does jqGrid provided a property to reloadGrid but preserve current grid contents? I read the documentation and Demos but addRowData didn't seem to be a good fit especially when the AJAX request returns multiple rows. The code below handles the multiple rows wonderfully but clears the grid each time a new request is made.

// construct the url for the AJAX request           
                var newUrl = "../Controllers/GridController.aspx?type=ajax&operation=pop_Grid&term=" + term + "";
               
                // now set the grid's AJAX request url and reload the grid
                $("#searchDetailsGrid").setGridParam({url: newUrl}).trigger("reloadGrid");

Thanks again