All scenes gone under "Hierarchy"

Unity Engine
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1

When I opened my project this morning, all scenes in the “Hierarchy” window were gone and replaced by a single, empty “Untitled” scene. I can open a scene through File → Open Recent Scene, but when I do, it will remove an already opened scene in the list. So I’m not able to load all scenes back into the list.

Three questions:

  1. How did this happen?
  2. How can I get all scenes back in the list?
  3. Have I lost something important? Should I restore from a backup instead (which is one day old so I would be missing one day’s of work)?
2

The set of opened scenes is not terribly important, you can just find all the scenes in your project that were open and load them all additively one by one. If that’s a hassle, see this post:

3

Yes but how do I add them back in? I choose “Open Recent Scene” and pick “Scene_1” for instance. This scene is then displayed in the Hierarchy window. Then I do “Open Recent Scene” again and pick “Scene_2”. This causes Scene_1 to be removed from the list and now only Scene_2 is in the hierarchy window.

4

You need to find the scene asset, right click, and load additively.

1 Like
5

You can also drag the scenes into the hierarchy. Either way, you need to find the scenes you want in the Project view.

1 Like
6

Aaaah, got it. Thanks!