This article explains how saving works in the editor, why changes can seem to disappear, how confirming and Undo behave, and how to recover safely if something unexpected happens.
How saving works
Your work in a step is kept when you click Save (the disk icon in the header) or confirm the step with its confirm button, for example Confirm Landmarks. Measurements you add yourself are saved a moment after each change. See The Editor & Viewer for every confirm button.
Important: Everything else (moving implants, dragging landmarks, changing parameters) is kept only when you click Save or confirm. If you leave the page, refresh or switch steps first, those changes are lost.
I can't save or confirm
Hover over the disabled button to see why. Common reasons:
You have view-only access to the case.
Required landmarks are missing.
Data is still loading.
The Combined view is open. Switch to a single anatomy view to continue.
Save is not shown on demo cases.
What to do if something looks wrong
If something unexpected happens in the editor (for example, the view does not update, an action fails, or results look incorrect):
Go back to the previous step.
Make a small change (even a minor adjustment).
Move forward again and confirm the step.
This forces the step to refresh and usually resolves temporary state issues.
Session timeouts and long-open tabs
For security, your session ends after a period of time. When that happens, a sign-in window appears over the page. Sign in again to continue.
Work you did not save may be lost. To avoid this, click Save before you step away, and don't leave the editor open with unsaved changes for long periods.
Undo
Click Undo in the side panel or press Ctrl+Z (Cmd+Z on Mac). The button tooltip shows Undo last transform, or Nothing to undo when there is nothing left.
Undo covers:
Moving and rotating elements, in the 3D and slice views
Dragging landmarks
Changes to the measurements you added
Guide and object settings
Undo does not cover implant or template swaps. There is no redo, and the undo history is cleared when you leave the editor. For changes Undo can't reverse, change them back yourself or refresh to return to your last saved state.
I want to reset the current step
Refresh the page. When you refresh:
You return to the last saved state of the current step (your last Save or confirm).
The case is not deleted.
Unsaved changes in the current step are discarded.
Note: While the case is loading or processing, your browser asks you to confirm before you refresh or leave.
Key takeaway
Save early, save often.
Confirm each step when you finish it.
If something breaks, go back one step, make a small change, and confirm again.