Technically it seems to be very much impossible due to two below mentioned reasons.
Number 1. CBIC had extended the due date of the GST TRAN 1 form till 31st March 2020 on the consideration of technical issues faced by the registered person. The latest order has superseded the Order no. 01/2019 and now applies to the concerned taxpayers and filers.
This was for those taxpayers who could not file or wrongly filed Tran-1.So According to this time is over for you.Nothing is for you according to this notification except knocking at High Court. Though favoring the taxpayer many High courts allowed Tran-1 filing after due dates but to counter High Courts Revenue brought below mentioned notification that restricts filing Tran-1 after due dates.But one positive thing in your case you have already availed in Tran-1 credit in 3B instead of Tran-1 form.So you can fight for eligibility of your claim not for that you have not filed Tran-1.Many taxpayers faced such problems,Hon'ble Panjab & Haryana Court in case of Adfert Technologies Pvt. Ltd. Versus Union of India others CWP No.30949 of 2018(O&M) Date of Decision 04/11/2019 = 2019 (11) TMI 282 - PUNJAB AND HARYANA HIGH COURT allowed taxpayers to avail Tran-1 but only challenge Number 2 to some extent.
Number 2. Notification No. 43/2020 – Central Tax dated 16/05/2020
CBIC has appointed May 18, 2020, from which retrospective amendment in Section 140 of the CGST Act, 2017 prescribing the time limits for taking transitional credits as per Section 128 of the Finance Act 2020 shall come into force. The amendment is made effective retrospectively from July 1, 2017. In many cases, High Courts had allowed transitory credit even when required returns were not filed before the due date. The amendment was done to get over these judgments and provided that transitory credit taken after the due date will be disallowed if return filed beyond the due date. This amendment is with retrospective effect to nullify judgments of various High Courts Section 140 of the CGST Act, 2017 amended with retrospective effect.
But this notifcation talks about Return filed beyond date but you have already filed so have to take plea for eligibility of your claim only in High Court.
I hope you got your answer.
May i be wrong somewhere,So requested to all Subject experts to correct as i am new in GST practice want to learn more from my all seniors.
Thanks
CMA JAGDISH SHARMA