Export and re-import (for instance, to create a new novel from existing material in a former novel) in Markdown and Word is faulty. When re-importing a novel into NC from a previous export, the hierarchy of Novel / Act / Chapter / Scenes is changed (without tweaking the import file): the Scenes are turned into Chapters, and the Scenes are then copied inside, which amounts to many chapters with just one scene in each + a blank scene.