How to migrate a Blueprint successfully to a different Project/Level?

I downloaded the free Blueprint Demo Project. Super cool.

I would like to use some of those blueprints inside other projects and levels.
I can see the Blueprint node inside the World Outliner.

I can also open the Blueprint Graph itself.

But when I execute the Blueprint - it’s not working.
Please see the short video below that demonstrates and explains every single step - audio included:

question:
what am I doing wrong?

Migrate it into your Content folder, it’s required to get the references for meshes, textures, materials and whatnot. When you migrate something it kinda expects the same root folder (Content) as it had before.