I have licence for Active Virus defense so can i upgrade to Endpoint Suite with my same licence ???
I and my clients, have used McAfee products for many years and have seen product suite changes occur. When McAfee changes the product suite, your valid grant number still works, until your end-date. (I prefer and recommend the Perpetual License, though your license may be different.) You may download and install products from http://www.mcafee.com/us/downloads/downloads.aspx using that grant number. It has been my experience that you are entitled to use the downloaded products, even if the previous license may not have been included in the previous product suite.
As product lines change, your re-purchasing support will change to the new product line. I would talk to your sale rep to find out which product most closely meets your needs and find out what change in price for support will be. Whatever product suite you end up with (for support) will define the products you may continue to use.
Of course, your mileage may vary, so talk to your McAfee rep for better details.
I hope this helps,