[![Keyframe](https://i.stack.imgur.com/nWzcT.png)](https://i.stack.imgur.com/nWzcT.png) 

This is something annoying because it always happens at some point, since I know Blender in version 2.5x I have always wondered how to delete those keyframes that are lost and do not appear or are assigned to any object or value or constant of your blend file, and that you never find and although they seem harmless they always end up causing you problems to export your model to some other game engine platform.

Any suggestion of how to erase these keyframes? Some script or something in the file that you should delete???

[empty.blend download](https://blend-exchange.giantcowfilms.com/b/6240/)