We have heard from our customers how project models become bloated with duplicate Revit families. For example, “E1 30 x 42 Horizontal.rfa & E1 30 x 42 Horizontal1.rfa”. Guardian assumes the project model in which content is being insert into contains the accurate content and provides you means to map, or merge if you will, these incoming families. Thus, this prevents the accumulation of duplicate families that happens over the course of a project. Better yet, Guardian memorizes these mapping so it happens automatically for everyone in the firm moving forward.