LTCG schedule 112A inadequacy for M&A cases

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Acche Din (Querist)
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12 February 2021 There are serious complications in merger and acquisition cases for calculating LTCG. Gruh Finance shares were bought before 31 Jan 2018. Gruh has merged into Bandhan Bank on 17 Oct 2019 (ratio 1000 Gruh to 568 Bandhan). FMV of Gruh on 31 Jan available 2018 but Bandhan listed on March 27 2018. Transaction level LTCG calculation for Sale of Bandhan shares will need reworking cost price for equivalent number of Gruh shares for each transaction and number of transactions can run into 1000s. How does one go about this ?