I think they are trying to remove BINs from any Future RuPay Platinum offers. Banks and Card Networks don't go on changing BINs like this. There are only two possibilities
1. The entire card data got leaked by NSDL, so they are refreshing the BINs
2. They are trying to remove some features the old card had costing NSDL money, so they are refreshing it.
All in all, expect any renewed RuPlat offer to not work on these new cards, heck the card won't work on RuPay Friday offer for the remaining of the March either.