I created a new layout based on the Dual Navigation one, but the Copyholder beneath the Outliner is not saved. The manual says that, as it is a project-dependent piece of information, this is expected behavior. However, the default Dual Navigation layout can do it.
My goal is to switch between a no split editor window and a dual navigation one where the panels are locked in place. Does this mean that I should wish for project-based layouts?