Subsection (2) applies if—
section 63D material is taken (or, in the case of a DNA profile, derived from a sample taken) from a person in connection with the investigation of an offence, and
the person is subsequently arrested for or charged with a different offence, or convicted of or given a penalty notice for a different offence.
Sections 63E to 63O and sections 63Q and 63T have effect in relation to the material as if the material were also taken (or, in the case of a DNA profile, derived from a sample taken)—
in connection with the investigation of the offence mentioned in subsection (1)(b),
on the date on which the person was arrested for that offence (or charged with it or given a penalty notice for it, if the person was not arrested).