Importer generates multiple animations

Hi,

I'm having a problem. I created a model with an animation in blender and i imported it to Unity. When i did that it created one animation in the project tab.

But when i updated the model including a new animation (splitting in the importer) it creates three animations for each animation in the importer. See figure.

It creates one animation for each time i have updated the animations. Of course each animatio is different, and its a problem because i can figure out which one is the right one to use.

Pleas help me.