I am trying to add two layers (A-FURN-3-CGDS-VV-1 & A-FURN-3-CGDS-HH-1) to about 4,700 DWG files, and am looking to see if anyone knows a way to bulk process something like this. We use blocks for furniture symbols, and have about 4,700 of them that need these specific layers in them in order to wo...