I want to rename the default __root__ node created on import ('cause I have to load/unload many files, and naming the root object make them easy to spot), and then playing with its Y rotation.
But it seems to be overwritten somewhere, even after the onLoad of the ImportMesh.
I can probably hide the rotation property if there is a rotation quaternion one
And it is mentioned in the doc that rotation quaternion is higher priority than rotation:)