Is there anyway when placing an imported dwg file over a base to make all of the dwg wall lines stick to the base so that they can be pulled up to the desired wall height in the 3-d model? I typically end up with them either not attaching, or having everything in the plan (dwg) pull up instead of just individual items. It is very time consuming to have to try to redraw each wall (item) to get them to act independently of everything else. Any ideas or quick proceedures for this?