Using .bak files

Specific actions cause Allplan to make backup copies (files ending in .bak) of the drawing file or layout. The .bak files and the original drawing files and layouts are stored in the same folder, i.e. the project folder. You can choose to create .bak files in the Options on the Desktop environment page.

If you have selected the wrong tool, you can use the .bak file to restore the original data of a drawing file or layout. All you need to do is rename the drawing file or layout in Windows Explorer.

Allplan creates .bak files

When you select the Copy, Move Elements between Documents tool.
When you delete drawing files and layouts using Delete Document....
When you delete the contents of drawing files and layouts in the Open on a project-specific basis: drawing files from fileset/building structure or layouts dialog box.
Before you import data to drawing files using Import
Before you import data using Add drawing files and layouts with resources to project.

Note: Please note that these backup copies may increase the volume of data involved in backing up projects. You should therefore delete unnecessary .bak files before you start the backup.

To use .bak files

For example: You have accidentally copied wrong elements to drawing file 4711.

Find out which folder includes the current project: Start the Services application, select the Service menu, choose Hotline Tools and double-click wopro.
Exit the Allplan project.
Delete or rename the file tb004711.ndw. You can name it tb004711.ndw.old, for example.
Rename the file tb004711.ndw.bak. Enter tb004711.ndw for the new name.

For example: You have accidentally copied wrong elements to layout 815.

Find out which folder includes the current project: Start the Services application, select the Service menu, choose Hotline Tools and double-click wopro.
Exit the Allplan project.
Delete or rename the file pb000815.npl. You can name it pb000815.000.old, for example.
Rename the file pb000815.000.bak. Enter pb000815.npl for the new name.