(4.01) Notwithstanding subsections (4) and (5), an assessment, reassessment or additional assessment to which paragraph (4)(a), (b), (b.1), (b.3), (b.4) or (c) applies in respect of a taxpayer for a taxation year may be made after the taxpayer’s normal reassessment period in respect of the year to the extent that, but only to the extent that, it can reasonably be regarded as relating to,