Archicad (by Graphisoft) does not support transparency in external PDFs placed on Layouts—the transparent areas are rendered as solid white. As a workaround, you might try converting PDFs to PNGs with transparency retained and then place those images instead.

Archicad doesn’t currently provide a built-in feature to automatically identify or purge unused graphic override rules. The best approach is a manual process: check which rules are applied to your views and layouts, then compare with your list of rules to find unused ones. N...

Archicad files can get bloated over time, especially with your workflow. Try "Save As" a .PLA (Archive) to gather only used elements, then re-save as .PLN. Also, regularly use "Remove Unused Attributes" (under Attribute Manager) to clear unused line types, surfaces, etc. Cle...

Unfortunately, once you’ve closed ArchiCAD properly and chosen “Don’t Save,” the autosave and backup files are deleted, so recovery isn’t possible through ArchiCAD itself. The .log files only contain session or error log information for troubleshooting and can’t be used to r...