As you are aware after 15th March funds will not be credited to your Paytm Bank account. If Paytm bank is linked to your folios, then mostly the AMC will process your redemption proceeds through cheque/warrant on the registered address mentioned in the folio. You can  check the bank details in the respective folios and if Paytm bank is linked with your existing folios, kindly update the bank details in all your existing folios before placing a redemption order.