Hello. I have a complicated part that references a very complicated drawing that I don't want to have to re-do. I have been making new "save as" parts from the origional part, so I have multiple variations of that part. I also want the new parts to be referenced by new drawings, that are a continuation of the old drawings (so I don't have to start from scratch with the new drawings). Basically, as of now, the only way I can think to have the drawing change as I want it, is to modify a save as copy part, but then I loose the old drawing. Is there a way to separate these? I hope that was clear enough. Thanks.