Is there any way of refreshing the dropdown options on a pivot table? It seems that, when an underlying dataset changes, Excel (03) still leaves the 'old' options as selectable. So, suppose my date column is {'94 Q1', '94 Q2', etc.} and I change it to {'1994_Q1', '1994_Q2', etc.}, do I have to rebuild the table to flush out the old options?