Saving Projects
When you save an entire project, you use a different command then what you use to save other types of definitions.
To save a project, select You can also select to save the project with a new name. Selecting is a good way to make a copy of a project because the original project still exists under the original name.
The Save toolbar button saves whichever definition is active in the definition workspace, but you cannot use it to save an entire project.