Cant you just create the module from the exsisting board? If you do a create module from the board it will take that section that you window and make a .mdd which you can then use? This would eliminate a lot of steps that you are doing. A little trick that I do is to copy the .mdd into a .brd to read in a schematic representation of the module. I am not positive but believe that the properties get carried into the .mdd. thanks, Mike Gnieski EMC2 Corp. _____ From: Mariani, Stephen [mailto:smariani@xxxxxx] Sent: Friday, March 11, 2005 11:07 AM To: icu-pcb-forum@xxxxxxxxxxxxx Subject: [PCB_FORUM] Design Reuse From Existing Designs I am creating a module from an existing design. I have done the following: 1, Read in the tec file from the existing board and imported it to the Module. 2, Read in the new tel file to the module. 3, Took existing (board I want to copy from) and exported the placement. 4, Read the placement into the module, that placed only the components I needed for the module. 5, Clipped all the traces, vias and fills from existing board from specific area. 6, Imported clip files to the module. Now I notice all the traces are missing properties. I am necking down inside fine pitch BGA's and I have a ton of trace width errors. Does anyone know how to import the net properties to my existing module? I tried reading in the netlist with properties but not sure this is the best way? Thanks Steve Stephen Mariani Mercury Computer Systems, Inc. 199 Riverneck Road Chelmsford, MA 01824 Phone: (978) 967-1855 Fax: (978) 244-0520 <mailto:smariani@xxxxxx> mailto:smariani@xxxxxx