If, before the commencement of the Justice (Miscellaneous Amendments) Act 1993 –

(a) a copy of a summons was served on the Crown Solicitor or the Solicitor-General under section 304 , that copy is to be taken as having been served on the Director of Public Prosecutions; or

(b) any act or thing was done by or in respect of the Crown Solicitor under section 368A in relation to a notice of alibi, that act or thing is to be taken as having been done by or in respect of the Director or Public Prosecutions.