When you are updating a project, you can globally update all 2D sections and elevations within the views and sheets of the project. You cannot globally update elements and constructs, because these project drawings usually contain reusable elements and individual parts of the building project. They normally do not contain sections or elevations.
When you are updating a specified folder within a project, or a folder outside of a project, all sections and elevations in that folder are updated regardless of their type. For example, if you choose to update a specific folder within the Constructs category of a project, the sections and elevations in that folder will be updated, even though they are Construct drawings. If you do not specify a folder, but choose to update the whole project, these construct drawings are not updated.