How to save Patchwork patch?

Hello! I am learning Patchwork for UEFN and I think I understand how it works in Game Mode to patch up all the devices. But when I close a session all the cables are removed. How to I save a patch so that I can incorporate a finished music patch into an island?

Thank you!

Yes, indeed, how do you save a song? It is absurd to make music on a computer without the ability to save.