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Part 2 of #23619 In **Bevy 0.19** we are landing a subset of Bevy's Next Generation Scene system (often known as BSN), which now lives in the `bevy_scene` / `bevy::scene` crate. However the old `bevy_scene` system still needs to stick around for a bit longer, as it provides some features that Bevy's Next Generation Scene system doesn't (yet!): 1. It is not _yet_ possible to write a World _to_ BSN, so the old system is still necessary for "round trip World serialization". 2. The GLTF scene loader has not yet been ported to BSN, so the old system is still necessary to spawn GLTF scenes in Bevy. For this reason, we have renamed the old `bevy_scene` crate to `bevy_world_serialization`. If you were referencing `bevy_scene::*` or `bevy::scene::*` types, rename those paths to `bevy_world_serialization::*` and `bevy::world_serialization::*` respectively. Additionally, to avoid confusion / conflicts with the new scene system, all "scene" terminology / types have been reframed as "world serialization": - `Scene` -> `WorldAsset` (as this was always just a World wrapper) - `SceneRoot` -> `WorldAssetRoot` - `DynamicScene` -> `DynamicWorld` - `DynamicScene::from_scene` -> `DynamicWorld::from_world_asset` - `DynamicSceneBuilder` -> `DynamicWorldBuilder` - `DynamicSceneRoot` -> `DynamicWorldRoot` - `SceneInstanceReady` -> `WorldInstanceReady` - `SceneLoader` -> `WorldAssetLoader` - `ScenePlugin` -> `WorldSerializationPlugin` - `SceneRootTemplate` -> `WorldAssetRootTemplate` - `SceneSpawner` -> `WorldInstanceSpawner` - `SceneFilter` -> `WorldFilter` - `SceneLoaderError` -> `WorldAssetLoaderError` - `SceneSpawnError` -> `WorldInstanceSpawnError` Note that I went with `bevy_world_serialization` over `bevy_ecs_serialization`, as that is what all of the internal features described themselves as. I think it is both more specific and does a better job of making itself decoupled from `bevy_ecs` proper.