Application Scenario: We have a large page, that we are wanting to improve the performance on. We have a few drop downs that change there available options based on the selections of another drop down. We retrieve the values of the second item though JSON and a generic handler. We generate the items for the drop down list, and then post the final values back when the user is finished. The problem we have is that the user selected item is lost between client and server click actions. I provided a sample scenario that illustrates the problem, and the basic application of this scenario. The drop down does have all the client populated items, but the item that is selected is not retained. Our temporary work around is to store the selected item in a hidden field and read from that which does keep it's value.