Splitting up one threaded story into TWO threated stories

Is there another script available than 'Break frame' and 'Split story' because they don't do what I need.

For example: I have 4 pages with linked text frames. Now I want to cut the story in two at the end of page 2 and restart at the beginning of page 3 without any change in the layout.

So, the text frames on page 1 and 2 should still be linked and the text frames on page 3 and 4 should also still be linked.

In other words: cut the story in two.