Thanks Haritha for quick reply.
Yes, we are trying with JS based export because of context menu feature. But as i mentioned earlier, Our Flash based export (Right click) also not working because of API classes in consistency with JSP files provided as part of up gradation.
Ideally up gradation should provide back ward compatibility of "Exporting Flash based charts" using server side, which is not working for us. Our primary question is why upgraded version of JSPs are not in consistent with API.