if i group some element i can move it with out problem. but if i cut than or copy, when i past one of the element select in single in this group and not de groupe(square indicate he is in the groupe). so this element auto align on the grid (and i can take this element and go everywhere i wont the scale of the groupe juste reseize) and the other element don't move you reslect de same groupe anywhere on selection square all element move at once. but now your first element you have click on de group is not at the sameplace is suppose to be