As per Section 16(4) of CGST Act 2017, the due date for claiming ITC in respect of any invoice or debit note is earlier of following:
(1) 30th of November following the end of financial year to which such invoice or debit note pertains
(2) furnishing of the relevant annual return
As per 1st proviso of Rule 23(1) of CGST Rules 2017, if the registration has been cancelled for the failure of the registered person to furnish returns then no application for revocation shall be filed unless such returns are furnished along with tax and applicable interest & penalty pertain to such return has been paid.
Further as per Section 16(6) of CGST Act 2017, "Where registration of a registered person is cancelled under section 29 and subsequently the cancellation of registration is revoked by any order, either under section 30 or pursuant to any order made by the Appellate Authority or the Appellate Tribunal or court and where availment of input tax credit in respect of an invoice or debit note was not restricted under sub-section (4) on the date of order of cancellation of registration, the said person shall be entitled to take the input tax credit in respect of such invoice or debit note for supply of goods or services or both, in a return under section 39,–
(i) filed up to thirtieth day of November following the financial year to which such invoice or debit note pertains or furnishing of the relevant annual return, whichever is earlier; or
(ii) for the period from the date of cancellation of registration or the effective date of cancellation of registration, as the case may be, till the date of order of revocation of cancellation of registration, where such return is filed within thirty days from the date of order of revocation of cancellation of registration, whichever is later."
As per 2nd & 3rd proviso of Rule 23(1) of CGST Rules 2017, all returns from the date of cancellation or effective date of cancellation as the case may be, till revocation of cancellation shall be furnished by the said person within 30 days from the date of order of revocation of cancellation
In the given case, registration was cancelled on 30 Sept, 2021 and all returns of FY 2020-21 prior to cancellation were filed on 31 March, 2022 which is before the last date for claiming ITC u/s 16(4)
Further returns from cancellation (30 Sept, 21) till revocation of cancellation (23 June, 22) need to be filed within 30 days from the date of order of revocation of cancellation. Therefore ITC claiming in those returns will be before the due date for claiming ITC u/s 16(4) (assuming the Annual return for FY 2020-21 is filed after 30 Nov, 21)
Hence, ITC claim in returns prior to cancellation and ITC claiming in returns after cancellation till revocation for FY 2020-21 are eligible for claiming (assuming all other conditions of section 16 have been satisfied)