Looking for an easy way to manage layers from a drawing I received from a surveyor. He has dozens of layers - I would like to incorporate the survey into my drawing, but with a manageable set of layers. If I copy the survey into my drawing all of the layers come along. So, I'm trying to delete layers but with several of them I get a box that says I cant delete certain layers, including layer 0 & defpoints, the current layer, xref dependent layers, or layers containing objects. Any advice? Thanks, Lee Hammack