Katha And Plan Approval

On May 2020 I purchased one property in Adarsha Nagar Arasina kunte Nelamangala. Municipal corporation taken hand over from gramapanchayath this year. I purchased an under construction house, plan approval was in the name of seller, at that time seller advised us to register only site and later when u get e khata u take approval on ur name itself. My confusions are: 1) When I purchased property it was 11 A E khata from arasinakunte gramapanchayat but now Municipality issuing Manual katha, is it safe to get manual katha now 2) Can I use plan approval which was already in the name of seller itself ( site regd in my name and building plan approval in the name seller will it make issue) 3) If I take building plan approval on manual khata issued by municipality will it be safe and legal. 4) will it make any issue in future if I want to sell my property. PLEASE GUIDE ME