anchor.diff:  
   changes_row(Db, #doc_info{id=Id, high_seq=Seq}=DI, Results, Del, true, Opts) ->
       Doc = doc_member(Db, DI, Opts),
  -    #change{key={Seq, Db#db.uuid, node()}, id=Id, value=Results, doc=Doc, deleted=Del};
  +    Uuid = couch_db:get_uuid(Db),
  +    #change{key={Seq, Uuid, node()}, id=Id, value=Results, doc=Doc, deleted=Del};
   changes_row(Db, #doc_info{id=Id, high_seq=Seq}, Results, true, _, _) ->
  -    #change{key={Seq, Db#db.uuid, node()}, id=Id, value=Results, deleted=true};
  +    Uuid = couch_db:get_uuid(Db),
  +    #change{key={Seq, Uuid, node()}, id=Id, value=Results, deleted=true};
   changes_row(Db, #doc_info{id=Id, high_seq=Seq}, Results, _, _, _) ->
  -    #change{key={Seq, Db#db.uuid, node()}, id=Id, value=Results}.
  +    Uuid = couch_db:get_uuid(Db),
  +    #change{key={Seq, Uuid, node()}, id=Id, value=Results}.
   
   doc_member(Shard, DocInfo, Opts) ->
       case couch_db:open_doc(Shard, DocInfo, [deleted | Opts]) of
  
positive.code:             ok
      end.
  
  calculate_start_seq(#db{uuid=Uuid1}, {_, Uuid2, _}) when Uuid1 =/= Uuid2 ->
      %% The file was rebuilt, most likely in a different order, so rewind.
      0;
  calculate_start_seq(#db{}=Db, {Seq, _Uuid, Node}) ->
      case owner(Node, Seq, Db#db.epochs) of
          true  -> Seq;
          false -> 0
      end;
  calculate_start_seq(_Db, Seq) when is_integer(Seq) ->
      Seq.
  
  owner(Node, Seq, Epochs) ->
      owner(Node, Seq, Epochs, infinity).
  
negative.code: 
  calculate_start_seq_test() ->
      %% uuid mismatch is always a rewind.
      Hdr1 = couch_db_header:new(),
      Hdr2 = couch_db_header:set(Hdr1, [{uuid, uuid1}]),
      ?assertEqual(0, calculate_start_seq(#db{header=Hdr2}, {1, uuid2, node1})),
      %% uuid matches and seq is owned by node.
      Hdr3 = couch_db_header:set(Hdr2, [{epochs, [{node1, 1}]}]),
      ?assertEqual(2, calculate_start_seq(#db{header=Hdr3}, {2, uuid1, node1})),
      %% uuids match but seq is not owned by node.
      Hdr4 = couch_db_header:set(Hdr2, [{epochs, [{node2, 2}, {node1, 1}]}]),
      ?assertEqual(0, calculate_start_seq(#db{header=Hdr4}, {3, uuid1, node1})),
      %% return integer if we didn't get a vector.
      ?assertEqual(4, calculate_start_seq(#db{}, 4)).
  
  