title: DevExpress XtraGrid Group By Column behavior on DataSource change
body: <p>My XtraGrid is assigned a DataTable as its DataSource:</p>
  
  <pre><code>        MyXtraGrid.DataSource = MyDataTable;
  </code></pre>
  
  <p>If I drag a column up to the group by panel, and then expand a few of the groupings, and then, with those groups expanded, reassign the XtraGrid's datasource, all but one of the expanded groupings get closed. The grouping that contains the current row remains expanded. Is there a setting that causes all the expanded groups to remain expanded when the DataSource changes?</p>