How to edit older animations?

I made an animation earlier and now I want to go back and touch it up
but I don’t know how to reopen it in the animator?

Go to Inspector debug mode, and there will be “Animation Type” field - you should set 2.

It is represent:

AnimationUtility.SetAnimationType (clip, ModelImporterAnimationType.Generic); // - 2
AnimationUtility.SetAnimationType (clip, ModelImporterAnimationType.Legacy); // - 1

This happens, when I try to open an animation.
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