To export all data of a project click on the project name in the menu in the navigation bar on the left side, click on 
on the top right and then choose 
Export Project.
The export includes:
Text and files from the project description
Sessions including notes, transcripts and files
A CSV file with the Session information
A CSV file with all highlights and their tags
A CSV file with the project's taxonomy
The Artifacts as a text document and all files from the Artifacts
Admins can export any Project. Contributors can export the Projects they have access to, once an Admin turns this on. It's off by default.
To turn it on, go to 
Settings and , and switch on Contributors can export Projects.
Learn more about all user roles.