In here I had two surface components, the upper and lower one, which is connected by the yellow line (which will result in connected node during the automesh)


I want to copy those components for the later use. I copied it by organize --> surfs by collector to select the component I want to copy --> dest component is a new component. But it turned out that the connecting line became red line, meaning it is free edge. In the figure below is the example when I tried to copy the lower one.


But when I copied both of the surfaces, the connectivity became green

Therefore I would like to ask, how can I copy not only the surface, but also the connectivity from the copied components?