Printing WPF Master-Detail Grid with ContentDetailDescriptor instead of DataControlDetailDescriptor

Hello!  I'm implementing a Master-Detail grid and printing it via view.ShowPrintPreviewDialog.

When I set it up with a DataControlDetailDescriptor, and set AllowPrintDetails=True on the Master grid's TableView, it prints the detail grids as well, as I expected.

When I change it to a ContentDetailDescriptor, then it only prints the Master rows.  Is this by design or do I need to do something different?  I'm using a ContentDetailDescriptor because I need certain columns in the detail to be invisible based on characteristics of the Master row (and that part works great, except for printing).

Not much changes in the code:

XAML
<!-- I replace this, which works and prints details: -->  
<dxg:GridControl.DetailDescriptor>  
    <dxg:DataControlDetailDescriptor ItemsSourcePath="OrderItems">  
          <dxg:GridControl>  
               <!-- the rest of the detail grid's definition, including a table view with AllowPrintDetails="True"  -->  
          </dxg:GridControl>  
     </dxg:DetailControlDetailDescriptor>  
</dxg:GridControl.DetailDescriptor>  

<!-- with this, which doesn't print details: -->  
<dxg:GridControl.DetailDescriptor>  
     <dxg:ContentDetailDescriptor>  
           <dxg:ContentDetailDescriptor.ContentTemplate>  
          <dxg:GridControl ItemsSource="{Binding OrderItems}">  
               <!-- the rest of the detail grid's definition, including a table view with AllowPrintDetails="True"  -->  
          </dxg:GridControl>  
          </dxg:ContentDetailDescriptor.ContentTemplate>  
     </dxg:ContentDetailDescriptor>  
</dxg:GridControl.DetailDescriptor>  

Thanks for your help!
-Scott