Lost character control when I change project files

Hello!!
I have a problem with character control in the new version of the UE 5.0.1

I create a scene from a scene template made earlier on the same version of the engine. When I’m working on a scene, everything goes as it should, character control works, switching between cameras, etc. At the end of the project, I delete my old template and unused levels from the project files (these files are definitely not used and the levels are not involved in the game). Then I run the project in the editor and the character may lose control on one of the levels. The level starts, the character appears at the beginning of the world coordinates, and then no keys work.
I do not understand what it is connected with. For now, I try not to remove extra levels from the project, so as not to damage it. But I think there must be some solution to this problem.

Can someone help me with my question? I would be very happy about it. Thank you in advance