Importing or Copying Flows

It seems like an obvious question, but I can’t find an answer anywhere on the forum. I now have five pieces as five separate projects. I would like to have all 5 in one project, ie. 1 project with 5 flows, as one piece with 5 movements. (This was necessary because I first export the music xmls from Cubase, and you can’t import an xml into a new flow in a project). How can I import the flows from pieces 2,3,4,5 into piece 1, so that all 5 flows are in one project?

For now, you will have to open all files, add flows to the first project and then copy each additional project and paste it into the corresponding flow. It has been mentioned that this will change as Dorico matures…