If you created a storyboard but it would fit better in another project, you can move it with only a few clicks.
This is how you do it
Go to the project the storyboard is created in
Hover over the top right corner of the storyboard, click on the three dots
Click on "Move Storyboard"
Choose what project the Storyboard should be moved into
Click on "Move"
Done!
The storyboard will be moved without the connected script, the assets will be copied into the new project. Already rendered videos will be moved into the new project.