I have a requirement to present a parent viewmodel that has a "Type" attribute, which when toggled, should display one of 2 different sets of viewmodels. I have managed to add 2 separate collections, both with template add row capability, to the parent viewmodel, and on InitializeRow, I hide all the rows in either collection that do not correspond to the parent object. 

This works great, however, I cannot get the grid to redraw the row's child collections/bands on change of the Type attribute of the parent. 
The expected outcome would be that all the rows in one child band are hidden and the others are then shown. 

I have tried various approaches, but do not understand why this does not just simply work. 

private void UgrdFundClosing_AfterCellUpdate(object sender, CellEventArgs e)
        {
            if(e.Cell.Row.ListObject is FundClosingAdvGridViewModel fundClosingVM)
            {
                if(e.Cell.Column.Key == nameof(FundClosingAdvGridViewModel.ClosingType))
                {
                    fundClosingVM.SetupBindingLists(fundClosingVM.ClosingType);
                    e.Cell.Row.Refresh(RefreshRow.FireInitializeRow, true);
                    
                }
            }
        }