anchor.diff:      Counters1 = fabric_dict:update_counter(Worker, 1, Counters0),
       Total = Total0 + Tot,
       Offset = Offset0 + Off,
  +    UpdateSeq = case UpdateSeq0 of
  +        nil -> nil;
  +        _   -> [{Worker, Seq} | UpdateSeq0]
  +    end,
       case fabric_dict:any(0, Counters1) of
       true ->
           {ok, State#collector{
               counters = Counters1,
               total_rows = Total,
  +            update_seq = UpdateSeq,
               offset = Offset
           }};
       false ->
           FinalOffset = erlang:min(Total, Offset+State#collector.skip),
  -        Meta = [{total, Total}, {offset, FinalOffset}],
  +        Meta = [{total, Total}, {offset, FinalOffset}] ++
  +            case UpdateSeq of
  +                nil ->
  +                    [];
  +                _ ->
  +                    [{update_seq, fabric_view_changes:pack_seqs(UpdateSeq)}]
  +            end,
           {Go, Acc} = Callback({meta, Meta}, AccIn),
           {Go, State#collector{
               counters = fabric_dict:decrement_all(Counters1),
               total_rows = Total,
               offset = FinalOffset,
  -            user_acc = Acc
  +            user_acc = Acc,
  +            update_seq = UpdateSeq0
           }}
       end;
   
  
positive.code:     end.
  
  go(DbName, _Options, Workers, QueryArgs, Callback, Acc0) ->
      #mrargs{limit = Limit, skip = Skip} = QueryArgs,
      State = #collector{
          db_name = DbName,
          query_args = QueryArgs,
  
negative.code: handle_message({meta, Meta0}, {Worker, From}, State) ->
      Tot = couch_util:get_value(total, Meta0, 0),
      Off = couch_util:get_value(offset, Meta0, 0),
      Seq = couch_util:get_value(update_seq, Meta0, 0),
      #collector{
          callback = Callback,
          counters = Counters0,
          total_rows = Total0,
          offset = Offset0,
          user_acc = AccIn,
          update_seq = UpdateSeq0
      } = State,
      % Assert that we don't have other messages from this
      % worker when the total_and_offset message arrives.
  