Named Boundary "Drawing Seed" name DGNLIB

Place Named Boundary "Plan_Profile_PLAN".  I am looking to add plan and profiles seeds sheet to the OpenRoads "Sheet Seeds" DGNLIB's,  I have found the DGNLIB where the current list is being pulled from "Plan and Profile Sheet Definitions.dgnlib" but when I add more models with edits they do not show in the Drawing Seed list.  I know I have the proper DGNLIB because I changed the one 50 scale plan and profile title block to make it mine but when I copy the models and rename and rescale they do not show in the pull down list.  How do you add more seeds to this list all the ones in there are setup for 1"=50'.