QGraphicsSvgItem changes position after parenting

[dodgeit]

Hi!
I'm showing some object stored in a svg file and everything works fine. The problem comes when i parent some objects. I parent some objects with

child.setParentItem(parent)

child.setParentItem(parent)

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and after that the child object moves from its original position. There is any way the child object not to move when i parent it?
Is it supposed the child object to take the transform from his parent? I want the objects to stay at the same positions they are on the svg file after parenting them. Any idea how to get it?
Any ideas are welcome!!!