# Default

> Replaces Prefabs by matching pre-existing connections to the Prefab.

## Definition

* **Type:** Field
* **Namespace:** [UnityEditor](/engine/6000.7/script-reference/unityeditor.md)
* **Assembly:** UnityEditor.CoreModule

> **Warning:**
>
> **Deprecated.** This has turned into the more explicit APIs, SavePrefabAsset, SaveAsPrefabAsset, SaveAsPrefabAssetAndConnect

```csharp
Default = 0
```

### Remarks

If the game object hierarchy was not connected to the Prefab before all game objects / components will be new and thus overrides in Prefab instances will be lost.