Parliamentary Voting System and Constituencies Bill

I quite understand the noble and learned Lord’s position in relation to secondary legislation. Clause 9(7) states: "““An order under subsection (4) may not be made unless a draft of the order has been laid before, and approved by a resolution of, each House of Parliament””." So we will get an opportunity to debate it. Does the noble and learned Lord have in mind some provisions of primary legislation? He rather glossed over primary legislation. If changes in primary legislation are envisaged, why are we not being told what they are so that we can address them head on?