The issue still persists, I imported the animations (I use .SMD and after I import with "Validate Against Target" or "Append to Target") from the other model to apply these models (these use the same bones), look:

That's where I exported the animations from, the bone is correctly positioned:

https://imgur.com/5WEHS59

The models where I imported the animations from the other model:

https://imgur.com/Lg5xiqx

The bones are positioned like a big sprain, that is to say... flipped.

I'm trying to make every model do the same animations, but not all models obtain good importations to the bones. In detail, the issue also applies to some bones...