Use Ctrl+Z on Windows or Cmd+Z on Mac to undo a recent edit in the current collection. Use Ctrl+Shift+Z or Cmd+Shift+Z to redo it. You can also open Changes in the collection header to inspect recent actions and choose Undo or Redo for an action.
Undo a collection change
The Changes menu lists recent edits with their time and description. It shows up to ten recent actions for the current collection. Check the description before undoing, especially after a bulk edit or merge. Before a manual merge, follow the Merge items review steps to choose the primary values and decide whether secondary records should be deleted.
Undo works for supported changes such as creating, editing, or deleting items and changing collection details. It cannot be assumed for every operation. A later action that depends on the selected change can prevent undo; reverse dependent changes first if appropriate.
For example, if you edit a contact and then change it again, undo the later change before trying to restore the earlier value. To avoid data loss on a large import or merge, export a copy before the operation as well.
The Changes menu can ask for confirmation when an action is more than five minutes old. The keyboard shortcut checks the same age limit but does not present that confirmation. If the shortcut fails, review the action in Changes and verify whether undo remains appropriate.
For a duplicate merge, download the data merge change log to inspect applied updates and deletions. That CSV records the result; it does not undo the collection operation.
Redo an undone change
Press Ctrl+Shift+Z or Cmd+Shift+Z after an undo, or use Redo next to an undone action in Changes when available. Redo can also fail when later actions depend on a different state. Check the item after redoing rather than assuming the result.
History is tied to the current collection. Switching collections can prevent the keyboard shortcut from undoing the previous collection's latest action. Return to the original collection and review Changes instead of relying on the shortcut alone.