Hi, 1st i am not a acad-specialist. But i am have drawn my house beginning with the 2nd floor in which i life. With drawing the basement and the fist floor i wanted to change everything in the 2nd floor to a evelation of 3.05 meters higher. But i realized, that changing the evelation only effects only on new objects even if i delete the original 2nd flow elements and redraw them. Is there a way to change the evelation of all 2-Dimensional drawn objects to a specified height ????? In fact i want to change a 2D-Drawing into a 3D-Drawing.