diff --git a/tutorials/scripting/gdscript/gdscript_exports.rst b/tutorials/scripting/gdscript/gdscript_exports.rst
index a2ac8ec4a43..9dadb1c9b1d 100644
--- a/tutorials/scripting/gdscript/gdscript_exports.rst
+++ b/tutorials/scripting/gdscript/gdscript_exports.rst
@@ -258,6 +258,13 @@ without having to use NodePaths:
     # Custom classes declared with `class_name` can also be used.
     @export var some_button: BaseButton
 
+.. note::
+
+    Node export is only supported in Node-derived classes. When a Node is
+    saved to a PackedScene, using ``Node`` or ``Array[Node]`` will store a
+    reference to a Node in the scene, but using ``Array`` or `Dictionary`
+    to store Nodes will cause a copy of each Node to be created.
+
 Exporting NodePaths like in Godot 3.x is still possible, in case you need it:
 
 ::