> For the complete documentation index, see [llms.txt](https://docs.nested-knowledge.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nested-knowledge.com/your-nests/nest-versions.md).
# Nest Versions
Learn how to save nest versions and restore them at a later date.
Save a nest version before a significant change or at a project milestone. A saved version lets an admin create an editable copy of the nest as it existed at that time.
{% hint style="info" %}
**Versions can only be saved manually.** A version includes work saved when you create it. Later changes aren't reflected in that version.
{% endhint %}
### Saving A Version
1. In **Settings**, scroll to **Nest Versions**.
2. Select **Save a Version**.
After you save a version, it shows the date and time, record count, included record count, and **Synthesis Version** checkbox. To edit the **Version Name**, select the pencil icon.
{% hint style="warning" %}
You can only save a version at the present time. You cannot save a version from a past date.
{% endhint %}
Saved nest versions in Settings.
### Synthesis Versions
Each saved version includes **AutoLit** and **Synthesis** data. To keep the nest's **Synthesis** display at a saved state while you update the nest, select that version's **Synthesis Version** checkbox.
If you don't select a **Synthesis Version** checkbox, **Synthesis** updates as the nest changes.
### Restore A Copy
A saved version remains in **Settings** until you delete it.
{% hint style="danger" %}
**Deleting a version can't be undone. Once deleted, you can't restore a copy of that saved nest version.**
{% endhint %}
To restore a version, create a copy of the saved nest:
1. Select **Restore Copy**.
2. In the dialog, enter a name for the copy.
3. Select **Create**.
**AutoLit** opens the new nest copy.
You can always generate a copy of the nest in its current state in [Nest Settings.](/your-nests/nest-settings.md#copy-rename-and-delete-a-nest)
### When To Save A Nest Version
Save a version before a significant change to your nest. For example:
* Changing **Settings**, such as screening modes
* Applying a bulk action that might not be reversible
* Deleting searches, exclusion reasons, or tags
* Changing the tag hierarchy or study design
You can also save versions at regular project milestones.
---
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