Undo and redo belong to the current editor session. They are designed to reverse your recent editing actions, not to provide a complete history of everything every collaborator has done.
What local history can do
- Reverse a recent layer, timeline, Inspector, caption, effect, or keyframe edit made in the current session.
- Treat a continuous drag or value scrub as a useful editing step.
- Restore an undone action with redo until a new edit creates a different direction.
What it cannot guarantee
- A chronological record of every collaborator’s action.
- A rollback containing only one person’s changes.
- Restoration of media that is no longer available to the workspace or browser.
- A predictable reversal after two people edited the same layer or structure.
- Recovery of the prior session’s local history after a reload or tab close.
Recovery decision tree
Safe recovery protocol
- Pause playback and finish any active gesture.
- Note the current frame, selected layer, and visible timeline range.
- If the mistake is clearly your most recent action, undo exactly once.
- Verify the result on both the canvas and timeline.
- Stop if the result removes or changes something another person intended.
- Agree on the desired result, then make a small explicit correction from the current draft.
Reloading clears session-only context, including local undo history. Give autosave time to finish and inspect the current shared result before refreshing.
