Troubleshooting
I broke my project — how do I get an earlier version back?
Open the clock icon in the top bar → "Version history…", pick the checkpoint from before things went wrong, and press Restore. Restoring never deletes anything — the state you are leaving is checkpointed too, so you can always come back forward.
Look for the semantic labels first: Cast takes a checkpoint right before every export, Enhance voice, re-transcribe and bulk cleanup, so "Before re-transcribe" is usually exactly the version you want. Between those, an "Editing checkpoint" is cut roughly every half hour of active work.
Not sure which checkpoint is the right one? Use Duplicate instead of Restore — it opens the checkpoint as a new project so you can look around without touching the current state of this one.
For a single bad edit, plain undo (⌘Z) inside the session is still the fastest way back; version history is for the cases undo cannot reach — after a reload, or when a bulk operation changed too much at once.