Moving existing layout within DS PCB

Hello,

I have a PCB board layout in DS – that I now need to enhance with additional components in the middle. Given quite fiddly routing to connectors at each end, I want to add some clear space in the centre of the board without having to layout everything that already exists either side of it.

This is an example of what I have today: [#1234#]. This is what I want: [#12   34#], where I group together then cut and paste existing components and traces outwards from a central line to free up some blank space in the middle, without disturbing the layout of each cut and pasted half. Is there an easy way to do this please?