Moving an app from App Lab to Lesson

One of my students created an app for an assignment as a project in App Lab. How can he move it into the lesson so he can submit it for grading? I know he can copy and paste the text of the code, but what about the objects?

Thank you.

Try importing individual screens and then copy and paste the code.

How do you import screens?

https://code.org/applab/docs/import