If proceedings are referred to the Youth Justice Court under section 137:
(a) the proceedings must be dealt with under this Act from the date of referral, despite that before that date the proceedings or any part of those proceedings did not comply with this Act or that a requirement of this Act had not been complied with; and
(b) the proceedings are not invalid only because, before the date of the referral, those proceedings did not comply with this Act or a requirement of this Act had not been complied with.