Why animations are Read-Only in animation windows!

Hi guy, I'm new to unity animation windows. I need to edit one of my animation a little but I mentioned I can't do that because all of my animations are Read-Only! what does it means? how can I solve that?
Please help me thanks.

 

I agree it would be awesome to edit the animations from within Unity. What's stopping you from opening the character model with the animations in the 3D modeling program it was created in?

My workflow for editing a model after I've imported it into unity is to open it from the inspector panel, make my changes in the 3D software it was created it, re-save and all is well.

 

They are read-only because they are imported. Reimporting the same file would erase any change you would have done.

You can duplicate animation clip if you need to modify them, Select one animation clip and press CTRL+D

 

This could be marked as solved as this is still the only solution to remove read only on imported clips.

t makes sense though, the animation array attached to imported models would be refreshed anytime that model with animations is reimported.