I have created a zoomline chart that is automatically updated via json: 
bchartObj.setDataXML(result.XML); 
  
Everything is working perfect, but if i zoom into the chart and data is updated, i lose the zoom. It pops back to default view.  
  
Is there any settings that can be set so that it keep your zoom and aslo update the chart? 
  
BR 
Truls