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The Timeline is your project’s change history. It records every version of the project as a change you can inspect, compare, and restore, so you always know how the logic reached its current state, and you can go back if you need to.

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Where to find the Timeline

Open the Timeline tab in the right sidebar of the Blueprint Editor.
The Timeline of the Loan Application Scorecard: the newest change on main, the closed draft lower_affordability_limit with Review opened and its struck-through changes, and older changes on main, one of them marked with the release v1.0

The Timeline lists every change, newest at the top, with the stream it belongs to.

Each row is one change, newest at the top. The panel shows: + New draft at the top starts a draft when the project uses Pending changes + Save.
The list does not show who made each change. To see the author, open the change.

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Streams and the change graph

A stream is a line of changes. Every project has a main stream. With the change workflow Pending changes + Save, you also work on drafts: separate streams that start from main and return to it when you save them. The graph makes this visible:
  • A draft’s lane starts at the version of main it was created from.
  • When a draft is saved, a new change appears on main. Its card says which draft was saved and lists the changes it included.
  • Saved drafts are struck through: once a draft is saved, its history stays visible but is crossed out.

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Open a change to see the detail

Click any change to expand its card.
The card of the newest change on main: Edit logic in 'Quick Affordability Check', Apply draft Lower affordability limit to main with the included changes, the badges Applied to main, System, and main, René with the timestamp and project v10, and the actions Open review, Open this version, Restore this version, Create release, and Compare

A change card shows what happened, who made the change and when, and its actions.

The card shows:
  • What happened: a description and badges for the kind of change (for example Applied to main), its origin (Manual edit, AI, or System), and its stream
  • Who and when: the author, the exact timestamp, and the project version the change produced
  • Actions: inspect, restore, release, or compare the change
Timestamps in the list are rounded (3h ago). The exact time (down to the minute) is only shown on the card.

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Actions on a change

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Compare changes

Use the Compare section of a change card to see exactly what a change altered:
  • Compare with previous: compare this change with the one before it
  • Compare with target stream: on a draft, compare it with the stream it will be saved to (usually main)
  • Select for compare…: pick this change as one side of a comparison, then choose another change as the other side

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Reading a comparison

Once you pick two versions, the editor switches to Compare and shows the difference between them.
Compare from main v9 to main v10: the section Compare With Income with 40 struck through and 35 added in its description and in the step Within the 35% limit, the changed sections marked in the Contents sidebar, and the Diff Summary listing three changes

Compare marks each change in place and lists all changes in the Diff Summary.

  • The document marks every change in place: removed values are struck through in red, added values are highlighted in green. In the comparison of main v9 and main v10, the affordability limit changes from 40 to 35.
  • The Contents sidebar marks the Blueprints and sections that changed.
  • The Diff Summary at the bottom names the two versions (for example main v9 → main v10) and lists every change, grouped by Blueprint and element.
Click Close compare to return to the current version.

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Restore an earlier version

If a change introduced a problem, you can roll the project back:
  1. Open the change you want to return to.
  2. Click Restore this version and confirm.
Leapter adds a new Restored change at the top of the Timeline, so the history in between is never lost. Restoring can’t be undone with Ctrl+Z. To go back, restore again from another point in the Timeline.

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What to do next

  • Change Workflow: choose how edits are saved, and work on drafts
  • Review & Approvals: require a review before changes reach main
  • Lab Agent: the conversations behind your changes, available from View conversation