Revit :: Modify Windows Family - Change Axis Of Insertion Of Window In The Wall

I am working on my first real Revit project.  i need to modify a windows family and in particular i want to change the axis of insertion of the window in the wall. I mean... my window should be placed on the outer edge of my wall. i try to unlock the dimensions that define its position and then i lock the dimension in the new position; the window seems to be ok but only in the RFA file. When i imported it in my project file, the windows moves in the wrong way in my real wall.