Question

what is a project file motion?

Answer 1

All video tracks in a Motion project appear as a single
layer when imported into Final Cut Pro as a Motion
clip. The frame size and duration of the Motion clip are
determined by the settings in the Motion project. The
Final Cut Pro Media Manager does not manage source
media files used by a Motion clip's project file

Answer 2

Managing Projects When you work on aproject in Motion it's important to be organized. This includes keeping careful track of your project files, saving often, and maintaining regular backups Motion also autosaves projects to files that can be retrieved at any time