Active

When Active, a particular invoice format will be available for use within the system.  De-activating an invoice format that is currently associated with a project's invoice definition will have no effect on that project's setup (that is, that invoice format will continue to be used for that project).   De-activating an invoice format indicates that it can no longer be associated when defining any new project billing invoice settings (nor available when updating an existing project's billing setup).

Essentially, de-activating an invoice format prevents it from being associated with anything that it is not already associated with.