There is a file that can be used to setup the defaults for a new drawing. Traditionally it has been called "drwsetup.dtl". It is brought into a user's session by identifying it in the config.pro with a line like:
If you want to update an existing drawing with these settings, you have to load the drawing, then load the "drwsetup.dtl" file and apply it. Tedious if you have a lot of files but probably not that bad if you are doing the updates with a program?