Numbering settings during a project
You can use different numbering settings at different times in a project.
Before releasing a phase of the project for fabrication, you might use the Re-use old numbers option for numbering the entire model.
If a phase has already been released for fabrication in a project, you might use the Take new number option for new and modified parts.
If you are numbering other phases of the project at earlier stages of detailing, you might use the Compare to old option and try to combine as many position numbers as possible.