what actually as per my opinion is that as per notification no. 35/2020/F.No.370142/23/2020-TPL dated 24-6-2020 the extension is for only investments relevant to 54 or 54GB not for all since in the notification it is mentioned that :
"(v) section 54 or 54GB referred to in item (I) of sub-clause (i) of clause (c) of sub-section (1) of section 3 of the Ordinance or sub-clause (ii) of the said clause, the end date in respect of the time limit for the completion or compliance and the end date for making the said completion or compliance, shall be the 29th day of September, 2020 and the 30th day of September, 2020 respectively;"
if the words 54 or 54GB is read with the extended dates 29th day of September, 2020 and the 30th day of September, 2020 respectively makes the confusion since two sections only mentioned and corresponding two dates mentioned and last word respectively. pdf file of the said notification no. 35/2020/F.No.370142/23/2020-TPL dated 24-6-2020 is attached. I short there is some confusion.