When you choose to take an existing loop and continue to build on it after you stared to work in it with your students, then, of course, you develop the content to your liking. Most likely you will want to keep this new and improved version of the loop. You do that by clicking the button Copy loop. You can make several copies during your work in the loop with your students. The copies will end up under My loops. The copied loops will be named Copy of… But make sure that you adjust the names if you make several copies, so you won’t mix them up.