Changing ItemsSource after applying filter not updating GridView Rows

I am changing ItemsSource of RadGridview.

    gv.ItemsSource = enumerated;

     gv.Rebind();

After that I am clearing all the Descriptors

    gv.FilterDescriptors.Clear();
    gv.SortDescriptors.Clear();
    gv.GroupDescriptors.Clear();

Then reapplying all Descriptors.

    gv.FilterDescriptors.AddRange(filters);
    gv.SortDescriptors.AddRange(sorts);
    gv.GroupDescriptors.AddRange(groups);