Saving reframed videos on external hard drive - where are the projects?

I moved the a bunch of reframed video files from my local hard drive to an external drive. First reason is, I am switching computers soon, secondly I want to save space on my local drive. However, when loading the copied video files from the external drive into INSTA360 studio, all the reframings and projects are gone. What can I do to save the edited video files onto the external drive??? Where does Studio store the project info?