Currently, every time I move a window, the new position is saved in the perspective.
When I want to restore the perspective (as it was when I saved it), it doesn't do a thing, because the perspective was saved with my modifications.
I want to disable this behavior, how can I do that ?
Thanks
To restore the perspective as it was when you saved it, you have to reset it. Reset actually means restore to default but when you save a perspective and overwrite the current settings for this perspective what you actually do is change its defaults.
For instance,
Layout "A" is lost of course, and so is the previous default Java perspective layout.