jenifer:
You can use additional Layers and Layer Combinations to control the visibility of existing/demolished/new elements (this was the typical way before the Renovation filters). I don't know of the STAR(T) version has Graphical Overrides which could help, otherwise the line type of the demolished elements would need to be changed to dashed if that is your graphic standard.
You should add a Signature to your Profile (click the Profile button near the top of this page) with your ArchiCAD version and operating system (see mine for an example) for more accurate help in this forum.
David