Answered on December 20,2019
Even if you lost BMTC pass after renewal, you need to get a new pass by visiting BMTC office in Majestic along with the required documents. You also have to file an FIR for the same. Currently, there is no online procedure to do so as the online link will be activated only on October.
You need to pay amount for the remaining months for getting new pas as the bus pass is valid for 11 months. So, if you have lost it in the 6th month, you need to pay the fee for the remaining 5 months.