In Silverlight 3, we have a grid view where the displayed content can be updated through pop ups. Under normal circumstances, when a change is made to the underlying data, the change shows up just fine in the grid. However, if sorting is applied to a column in the grid (any column) and then a data change is made, the new value does not show up in the grid. Once sorting is removed and the grid goes back to its original order, the new data can be seen. Is this a known issue or is there some extra step needed? Thanks.