anchor.diff:              [{set, {node, node(), config_version}, {4,5}} |
                upgrade_config_from_4_1_1_to_4_5()];
           {value, {4,5}} ->
  +            [{set, {node, node(), config_version}, {5,0}} |
  +             upgrade_config_from_4_5_to_5_0(Config)];
  +        {value, {5,0}} ->
               [{set, {node, node(), config_version}, CurrentVersion} |
  -             upgrade_config_from_4_5_to_5_0(Config)];
  +             upgrade_config_from_5_0_to_vulcan()];
           V0 ->
               OldVersion =
                   case V0 of
  
positive.code:                   {set, {node, _, memcached_config}, new_memcached_config}],
                   do_upgrade_config_from_4_5_to_5_0(Cfg, Default)).
  
  no_upgrade_on_current_version_test() ->
      ?assertEqual([], upgrade_config([[{{node, node(), config_version}, get_current_version()}]])).
  
  
negative.code:         {audit_file, {"~s", [audit_file]}},
          {rbac_file, {"~s", [rbac_file]}},
          {dedupe_nmvb_maps, dedupe_nmvb_maps},
          {xattr_enabled, {memcached_config_mgr, is_enabled, [?VERSION_50]}},
  
          {logger,
           {[{filename, {"~s/~s", [log_path, log_prefix]}},
             {cyclesize, log_cyclesize},
             {sleeptime, log_sleeptime}]}}
         ]}},
  
       {memory_quota, KvQuota},
  