> For the complete documentation index, see [llms.txt](https://help.felt.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.felt.com/maps/undo-changes.md).

# Save and undo changes

Learn how Felt saves changes automatically and how to undo or redo edits. Keep map copies as backups because Felt has no version history.

Felt saves every change to a map as you make it, so there's no **Save** button. To undo, press **Cmd+Z** (Mac) or **Ctrl+Z** (Windows). Felt has no version history, so duplicate the map before making a big change.

## Felt saves changes automatically

Felt saves changes made in edit mode immediately, and everyone with the map open sees them in real time. Changes made in view mode, such as zooming or hiding a layer, affect only your view and last only for your session. To enter edit mode, click **Edit map** in the toolbar at the top right of the map, or press **Shift+E**. People with Contribute access see **Contribute**. See [Tour the interface](/getting-started/tour-the-interface.md).

Felt needs an internet connection to save changes in the browser. To capture data without a connection, use the Field App. See [Work offline](/field-app/work-offline.md).

## Undo and redo changes

Undo in Felt steps back through your own changes since you opened the map in this tab, one change at a time. It covers annotations, layers (including adding or deleting one), feature edits, and the map's title and description.

* To undo, press **Cmd+Z** (Mac) or **Ctrl+Z** (Windows).
* To redo, press **Shift+Cmd+Z** (Mac) or **Ctrl+Shift+Z** or **Ctrl+Y** (Windows).

Closing or reloading the map clears the undo history but keeps your changes. Edits Felt AI makes can't be undone. See [AI assistant](/felt-ai/ai-assistant.md).

## Go back to an earlier version of a map

Felt doesn't keep a version history of maps or layers, so make a copy before a big change:

* To keep a copy of the whole map, duplicate it. The copy's synced Felt Server layers share data edits with the original, though styles, filters, legend settings, and components stay separate. For an independent backup, turn off **Sync** in the **Data** tab of each synced layer in the copy. See [Duplicate and move maps](/maps/duplicate-and-move-maps.md#what-a-copy-includes).
* To keep a copy of one layer, open its **···** menu in the legend and click **Duplicate**. See [Duplicate layers](/layers/copy-and-duplicate-layers.md#duplicate-a-layer-on-the-same-map).

To return to an earlier version, work from the copy and delete the edited version. Support can restore a deleted map if you contact them within 7 days. See [Delete a map](/maps/organize-maps.md#delete-a-map).


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