Scene loses reference to the instanced scene when you reimport mesh which is present in instanced scene

[RomanZhu]

Godot version

v4.1.1.stable.official [bd6af8e0e]

System information

Godot v4.1.1.stable - Windows 10.0.19044 - Vulkan (Forward+) - dedicated NVIDIA GeForce RTX 3090 (NVIDIA; 31.0.15.3623) - AMD Ryzen 9 5950X 16-Core Processor (32 Threads)

Issue description

Scene loses reference to the instanced scene when you reimport mesh which is present in instanced scene

Steps to reproduce

https://github.com/godotengine/godot/assets/12017366/b1d78ebe-a386-4d60-a811-4d6b0afff535

1. Have 3 scenes that are instanced inside each other (scene, instanced_scene, torch), in the deepest one contains a mesh
2. Open scene, instanced_scene, torch scenes
3. Save scene, instanced_scene, torch scenes
4. Close instanced_scene, torch
5. Reimport said mesh
6. Open instanced_scene
7. See that there is no Open in Editor button
8. Move some other object in this scene
9. Save the scene
10. You can't see the mesh in the scene and instanced_scene anymore

Minimal reproduction project

BrokenScene.zip

[bitsawer]

I can confirm this in current master branch. There might have been pretty similar / duplicate bug report somewhere, but I can't find it right now.

[lyuma]

I am unable to reproduce this in Godot 4.2

@SaracenOne, do you know if you made a fix to this in 4.2? what pr might it be?