All users can create unlimited copies of their projects. To create a project duplicate, click the copy button in the project summary bar, as shown below.
Making a copy will preserve all the values, geometries, and changes of the previous file, but in a new project so nothing has to be lost or redone.
How else is the copy feature useful?
Use the copy feature to make a massing study. See how here.
Use existing templates to start your own custom project. See how here.