With Shuriken Particle Systems, when migrating from 3.5.6 to 4.0, the alpha keys from the Gradient in the Color Over Lifetime module are incorrect

Steps to reproduce:
Create a Particle System in Unity 3.5.6 using a gradient in Color Over Lifetime, and migrate the project to Unity 4.0.

1) Create a Particle System in Unity 3.5.6
2) Set the "Color over Lifetime" to a Gradient, with only one Color key
set to full white (delete another Color key). Set several alpha keys, with the first one set to 255, and then other values for the other ones.
(look at the attached image)

3) Open this project in Unity 4.0
OR
3) Export as a .unitypackage
4) When importing the package in Unity 4.0 (or opening and migrate from 3.5.6), the gradient will be corrupted: the second alpha key will have the same value as the first one, and a second color key will be added at the end of the gradient editor, also all alphas has the same values.

Look at the image attached by the user.