Ok. I think I might understand. A few examples. If I have a surface base.dwg with spot shots all over it (and its using old styles), (the file is also data referenced out). I would just use the insert command and the information would be in there. Lets say I have a pipe network base.dwg, with a drawing that contains profiles and proposed and old surfaces (that are data referenced in). I would use the insert command and be done?