I imported a 3d dwg survey and used it to creat my topograhy...excellent, all contours line up pretty well, a couple of approximations, but that is fine
BUT...when I move my topo to suit the location of my house (which of course I do quite often to get the site in the right place after looking at sections and 3d etc), if I move the imported dwg to sit over it again, MY CONTOUR LINES HAVE DISPLACED SIGNIFICANTLY from where they should be!!!!!!!
(Refer attached - coloured lines are contours in dwg)
This is a nightmare...how on earth could this happen....
I did some tests and it happens all the time...Is my logic out????