I understand that zerodha publishes the instruments master file everyday, and the clients are supposed to cache it. But, we have not cached it unfortunately, and there is no way to fetch them from anywhere. Is it possible to know how to find instrument tokens for delisted stocks? We also understand that the tokens might be reused, but we would still like to use them to fetch historical data in case they are not. This is to avoid survivorship bias in backtesting.
