Scotland Bill

I am sorry, but I have asked the Minister a very simple question. He has told us that for practical reasons it is not possible to accept this amendment. I am arguing that exactly the same practical issues arise with non-domiciles and it is possible for them to change their status more than once in a year. Can the Minister explain what practical reason frustrates the amendment moved by the noble Lord, Lord Forsyth, but permits non-domiciles to do this? It is a very simple question.