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Document Resource.duplicate(true) behavior change in Upgrading to Godot 4.5 #11292

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Sep 22, 2025
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Document Resource.duplicate(true) behavior change in Upgrading to Godot 4.5 #11292

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2 changes: 1 addition & 1 deletion tutorials/migrating/upgrading_to_godot_4.1.rst
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Expand Up @@ -195,7 +195,7 @@ Method ``create_action`` adds a new ``backward_undo_ops`` optional parameter
Behavior changes
----------------

In 4.1 some behavior changes have been introduced, which might require you to adjust your project.
In 4.1, some behavior changes have been introduced, which might require you to adjust your project.

================================================================================================================================================================================================== ===========
Change Introduced
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4 changes: 2 additions & 2 deletions tutorials/migrating/upgrading_to_godot_4.3.rst
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Expand Up @@ -224,7 +224,7 @@ Type renamed to ``EditorSceneFormatImporterFBX2GLTF``
Behavior changes
----------------

In 4.3 some behavior changes have been introduced, which might require you to adjust your project.
In 4.3, some behavior changes have been introduced, which might require you to adjust your project.

Core
~~~~
Expand Down Expand Up @@ -299,7 +299,7 @@ Multiplayer

This is a breaking change for the high-level multiplayer protocol making it incompatible with previous Godot versions.
Upgrade both your server and client versions to Godot 4.3 to handle this change gracefully.

Note that high-level multiplayer facilities are only ever meant to be compatible with server and client using the same Godot version. It is recommended to implement some kind of version checking.

Rendering
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12 changes: 11 additions & 1 deletion tutorials/migrating/upgrading_to_godot_4.5.rst
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Expand Up @@ -188,7 +188,7 @@ Method ``_get_option_icon`` changes return type from ``ImageTexture`` to ``Textu
Behavior changes
----------------

In 4.5 some behavior changes have been introduced, which might require you to adjust your project.
In 4.5, some behavior changes have been introduced, which might require you to adjust your project.

3D Model Import
~~~~~~~~~~~~~~~
Expand All @@ -204,6 +204,16 @@ new behavior, you must change the "Naming Version" option at the bottom of the I
Core
~~~~

.. note::

:ref:`Resource.duplicate(true) <class_Resource_method_duplicate>` (which performs
deep duplication) now only duplicates resources internal to the resource file
it's called on. In 4.4, this duplicated everything instead, including external resources.
If you were deep-duplicating a resource that contained references to other
external resources, those external resources aren't duplicated anymore. You must call
:ref:`Resource.duplicate_deep(RESOURCE_DEEP_DUPLICATE_ALL) <class_Resource_method_duplicate_deep>`
instead to keep the old behavior.

.. note::

:ref:`ProjectSettings.add_property_info() <class_ProjectSettings_method_add_property_info>`
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