Missing prefab error after loading scene in unity

I’m encountering a persistent missing prefab error in Unity. When I try to load one scene into another, I get the error: “Prefab instance problem: [Prefab Name] (Missing Prefab with guid: [GUID])”. The error only occurs when loading scenes into each other, not when loading them individually.

Here’s my process:

  1. I import FBX prefabs into Unity.

  2. I edit the prefab (usually adjusting positions or adding components).

3.When I try to load the scene containing these edited prefabs, the error appears.

I’ve tried reimporting, using the “Override” feature, and saving scenes in different ways, but the issue still persists. Has anyone faced this issue or know how to fix it?

How exactly do you do so?

There are a number of threads related to how you lose some data when updating the FBX but I think they all revolve around doing it incorrectly, ie delete the old prefab and save the new one or something like that.

Make sure that “importing fbx” is done by exporting the fbx file in your modeling program and save it directly to the location under Assets where the existing file resides, replacing the original but not altering the .meta file (which contains the GUID).

It’s also good practice not to use an FBX “prefab” directly but rather to drop it into an actual “gameobject prefab” because they behave somewhat differently in my experience.

If that doesn’t help try to make the simplest test case and steps that can provoke this error and let us know what these steps are.