JSVGCanvas does not update with modified DOM using Update Manager

[Marc-Wayne M. Formales]

I'm fairly new to Swing/Batik/SVG so please bear with me.
 
I have a JApplet that loads an SVG via JSVGCanvas.setDocument(xmlDoc).  If a 
user clicks on a certain part of the document (any <a> tag), then I have some 
code that will animate that node and replace it in the document object.  I am 
doing this in the update manager, which does run in the gvtRendering event, but 
the UI is not updated with the changes I made.  I know that the DOM object is 
correct because if I write that to the file system, the changes are there.  Is 
there something that I'm missing?
 
Here is a snippet from the OnClickAction method:
 
 
   NodeList aLinks = diagramSVG.getElementsByTagName("a");
   for (int i . . . ) {
     final Node aLink = aLinks.item(i);
          .....
     Some code to find the element that was clicked on
     clone the element
     append an animate node to the element
          .....
   }
 
   UpdateManager um = BatikEWD.diaCanvas.getUpdateManager();   
um.getUpdateRunnableQueue().invokeLater(new Runnable() {     public void run() 
{         System.out.println("connID: " + connID);         
diagramSVG.getDocumentElement().replaceChild(animatedALink, aLink);  //where 
animatedALink is the modified         canvas.setDocument(diagramSVG);         
canvas.updateUI(); //I've tried repaint too but nothing seems to work         
panel.updateUI(); //I've tried repaint too but nothing seems to work        }   
    });Regards,
 
Marc