The term “amortizable section
197 intangible” shall not include any section
197 intangible which is described in subparagraph (A) or (B) of subsection (d)(1) (or for which depreciation or amortization would not have been allowable but for this section) and which is acquired by the taxpayer after the date of the enactment of this section, if—
For purposes of this subparagraph, the determination of whether the user of property changes as part of a transaction shall be determined in accordance with regulations prescribed by the Secretary. For purposes of this subparagraph, deductions allowable under section
1253
(d) shall be treated as deductions allowable for amortization.