All of the data we have online will reflect that fact that the retailer bought the system from Dell, not you. So the warranty information is from when the retailer purchased it from Dell.  All you can do is contact Dell India Customer Service and have them facilitate the service tag transfer from the retailer to you. They will then apply the original warranty periods on our internal tools. I doubt that the website will ever be correct.
I have bought a Dell laptop from a retailer on 25/10/2014. When I checked with dell using the service tag, its warranty start date is showing about one month before the invoice date. Also accident damage protection warranty started from the date it was shipped to India which was around June??? What does this mean? I have registered the product and don't know whether it will get changed to the purchase date. I have proper tax paid invoice with me. Please help me to correct the warranty period as per my purchase date.
Warranty showing different from Invoice date.