In axis upgrades only happen for the same "reward type cards", then only old card deactivated and new one activated.
Ex: Neo -> MyZone (both are edge reward types).
Flipkart->Airtel (both are cashback cards).
Otherwise, its a seprate card where you can use both neo and airtel.
....
Airtel LTF currently not possible, but even with 590 fee with your specific spending, you can easily get upto 9%. Check this..
Key Features
- 25% Cashback on Airtel Payments📲
- Categories: Airtel (Prepaid, Postpaid, Wi-Fi, Black, DTH) bills via airtel app.
- Cashback Cap: ₹250 per statement (limit reached if spent ₹1000).
- 10% Cashback on Utility Bill Payments
- Categories: Electricity, Gas, Water etc. via airtel app.
- Cashback Cap: ₹250 per statement (limit reached if spent ₹2500).
- 10% Cashback on Zomato, Swiggy...
Pay 590, get the card and utilize its benefits ASAP becoz future uncertain, so take before they devalue it.
This wont be useful after 2 years at the current situation, like neo (as LTF) you'll ask same question for...