Section 18 (6) read with CGST Rules require reversal of credit or payment of tax on transaction value, where the supplier has taken Input Tax Credits. The work input tax credit has been defined as credit of input tax (CGST/SGST/IGST/UTGST/cess charged under GST Act). Cenvat Credit availed in the pre GST regime cannot be said to be falling within the definition of Input Tax Credits. Also, there is no specific transitional provision requiring reversal of cenvat credit in case of goods purchased in pre GST regime but sold/discarded in post GST regime.
Irrespective of the above, when goods are exported outside India under claim of LUT, it falls within definition of 'zero rated supply' of goods and accordingly is not liable to GST.
Based on above, we are of the view that there is no GST liability on the export of such capital goods.
Regards,
Ashish