Open a Backup Project file (.bpn) to recover the latest backup copy of a damaged project file.
To open a backup file, do one of the following:
–Browse and double-click its name in the file system
–From the Archicad Open dialog or other system dialogs: use the dialog’s “All file types” filter to include BPN files in the available list
Make sure that Make Backup Copy is active in Options > Work Environment > Data Safety & Integrity.