How does Unity import animations from a .blend file?

I am importing a model and its animations directly from a .blend file inside of Unity's assets folder. While I've had a number of problems getting my information from blender to Unity, I've been able to work around most of the problems. However, I don't know a workaround for this one.

I imported my character and some of its animations into Unity, and set it up how I wanted it. Then I created some new animations for my character, and "Reimport"ed the blend file within Unity. However, my new animations are not showing up in Unity. I know that if I delete all my blend file data from Unity I can put a correct blend file in my assets folder and it will get those animations, but this will cost me all of the in-Unity work I've done. Based on prior testing, I've found that I MUST import the animations alongside my character, or they won't work, so exporting just the new animations is not an option.

Is there a way to get Unity to recognize that there are additional animations in my blend file, or is there some other solution I am not aware of?