If—
the asset ceases to be regarded as a pre-change asset for the purposes of sections 184A and 184B (but see also subsections (10) and (11)).
But (without affecting the generality of the provision made by the following subsection) if, on a non-section 171(1) transfer,—
that interest is to be regarded as a pre-change asset for the purposes of sections 184A and 184B.
If—
the new asset is also to be regarded as a pre-change asset for the purposes of sections 184A and 184B.
For this purpose the cases in which the value of an asset may be derived from any other asset include any case where—
If a pre-change asset is "the old asset" for the purposes of section 116 (reorganisations, conversions and reconstructions), "the new asset" for the purposes of that section is also to be regarded as a pre-change asset for the purposes of sections 184A and 184B.
If a pre-change asset is the "original shares" for the purposes of sections 127 to 131 (reorganisation or reduction of share capital), the "new holding" for the purposes of those sections is also to be regarded as a pre-change asset for the purposes of sections 184A and 184B.
The following subsection applies if, as a result of the application of a relevant deferral provision in the case of a disposal of a pre-change asset ("the original disposal"),—
and a gain or loss does, wholly or partly in consequence of the application of that provision in the case of the original disposal, accrue to the company or any other company on a subsequent occasion.
So much of the gain or loss accruing on the subsequent occasion as accrues in consequence of the application of the relevant deferral provision in the case of the original disposal is to be regarded for the purposes of sections 184A and 184B as accruing on a disposal of a pre-change asset (so far as it would not otherwise be so regarded).
A "relevant deferral provision" means any of the following—
If—
the asset is to be regarded as a "pre-change asset" in the hands of the transferee company for the purposes of sections 184A and 184B.
In such a case, subsection (1) applies as if the reference in paragraph (a) of that subsection to the relevant company were to the transferee company.