I’ve done it so many times on accident, I know exactly what u did, lol, if you move any sort of files, while unreal engine is open, from one folder, to another from your file explorer, like say, you can delete folders from outside the engine, no probelm, screw a redierector reference right? doesnt matter that actor will still be unloaded in the build util you put the same file, back where you got it, and move it from within unreal engine itself. Sometimes you can restart the engine, right click your contents folder and update redirector references, then right click all and validate assets, then you might have to replace the static mesh for a blueprint, with itself, but if the issue is just with a material or something like that it will fix itself, I think I’ve had it work with an actor blueprint, only like once or twice, at that point, just control z and undo lol.