              Default: ``None``
          """
          logger.debug("Saving %s config", section)
          new_config = ConfigParser(allow_no_value=True)
          for config_section, items in self._config_dicts.items():
              logger.debug("Adding section: '%s')", config_section)
              self._config.insert_config_section(config_section,
                                                 items["helptext"],
                                                 config=new_config)
              for item, options in items.items():
 
</s> remove                     continue
 </s> add                     continue  # helptext already written at top </s> remove                     options.set_initial_value(new_opt)
                helptext = self._config.format_help(options.helptext, is_section=False)
 </s> add                     self._config_dicts[config_section][item].set_initial_value(new_opt)

                helptext = self._config.format_help(options["helptext"], is_section=False) </s> remove                     new_opt = options.value  # Keep saved item for other sections
 </s> add                     # retain saved values that have not been updated
                    new_opt = self._config.get(config_section, item) </s> remove                 text = _("Save {} config").format(title)
 </s> add                 text = _(f"Save {title} config")
        for config_section, items in self._config.defaults.items():
              Default: ``None``
          """
          logger.debug("Saving %s config", section)
          new_config = ConfigParser(allow_no_value=True)
        for config_section, items in self._config.defaults.items():
              logger.debug("Adding section: '%s')", config_section)
              self._config.insert_config_section(config_section,
                                                 items["helptext"],
                                                 config=new_config)
              for item, options in items.items():
keep keep keep keep replace keep keep keep keep keep
 bugfix: Preview Tool, ensure all config items are written 
tools/preview/preview.py