Editing Custom Library Parts and Components
There are two ways to edit a GDL object saved from Archicad elements: either edit the script, or edit the original elements:
Edit the Script
See Open and Edit Library Part.
Edit the Original Elements
Edit the original Archicad elements from which you have saved the GDL library part, then re-save the library part (overwriting its previous version.)
To keep the original Archicad elements, you can do one of the following.
•place them on a separate layer, then hide that layer
•save them in a separate PLN file
•save and export them as a module (.mod file)