Exporting QGraphicsScene with items and importing them back into the application

Question

Is there a way to export my QGraphicsScene with all the items and import it without customizing it?

I am working on a Qt C++ application with a QGraphicsScene, where the user inserts items and connects them.

I want to add functionality for the user to export their diagram and import it again and continue working on it, is there an easy way to do so or do I need to build it myself.