I just started using Unity and i made some progress and i built a scene with some prefabs and logic.
While importing some package I downloaded via the package manager, i was asked if i want to open a new scene. Sadly i pressed yes, not know that it will erase my previous scene.
I was constantly CTRL+S while working on my original scene, though i couldn’t find any option to go back to my scene from this new scene.
Needless to say that countless CTRL-Z hits did not help.
Its seems like the new scene replaced the SampleScene.unity file in my original scene was saved.
if it imported scene with same filename and location, i would think that there is no way to get it back
(other than backup/timemachine - if available, or version control - if it was used)
although if unity would be still running after you imported the scene that overwrote yours AND you didn’t hit play on the new or other scene, there is Temp__Backupscenes\0.backup file for the last played scene…
and i guess in theory, that last played backup scene file could be possible to recover with some undelete tools… (since it gets deleted when unity is closed, but if you played the new bad scene, then that had overwritten the original backup scene already…)