anchor.diff:    FGrid.BeforeFetchPage;
     FreeOnTerminate:=true;
     FLastFetchDataResult.RefreshColumns:=ARefreshColumns;
  +  // fast copy of data (we need to draw old data for a while)
  +  New(FGrid.FCachedDataTable);
  +  Move(FGrid.FDataTable, FGrid.FCachedDataTable^, SizeOf(TDataTable));
  +  FillChar(FGrid.FDataTable, SizeOf(TDataTable), #0);
     inherited Create(false);
   end;
   
  
positive.code:   begin
      if FromThread then
      begin
        FFetchDataThreadTimer.Enabled:=false;
        FLoadDataPanel.Visible:=False;
        SetAllEditsAsReadOny(false);
  
negative.code:   protected
      FGUIUpdates: TUpdateOfVisualGridGUI;
      FDataTable: TDataTable;
      FCachedDataTable: PDataTable;
      FDataSource: IDataSource;
      FSearchCapabilities: TSearchCapabilities;
      FPageSize: Integer;
  