I have a grid that uses the GroupBy feature to group data. My grid show lots of data to the user so I have all my groups collapsed by default so the user isn't overwhelmed by all the data. This is done by setting the "initialExpand" property to false in the GroupBy feature. I have also turned on the Filtering and Sorting features. The problem occurs when the user expands some of the GroupBy rows then uses filtering or sorting. The result is that all the GroupBy rows collapse and the user has to manually re-expand the the GroupBy sections they were looking at. Is there a way to get a round this problem so no rows collapse?