I have about a dozen of so drawings in EPDM that are all of different configurations of the same part. Initially, I created the first drawing, then used Copy Tree to create the drawings of the other configurations. Now, a year or so has passed, and I need to make a significant amount of changes to the drawings. I would like to make all of the changes to one file, then save as / Copy Tree (while changing configurations of the views) to get updated version of the other files. How can I go about this while maintaining the history and data card variable of my existing files?