anchor.diff:  
   
   do_last_checkpoint(#rep_state{seqs_in_progress = [],
  -    highest_seq_done = ?LOWEST_SEQ} = State) ->
  +    highest_seq_done = {_Ts, ?LOWEST_SEQ}} = State) ->
       {stop, normal, cancel_timer(State)};
   do_last_checkpoint(#rep_state{seqs_in_progress = [],
       highest_seq_done = Seq} = State) ->
  
positive.code:         source = Source,
          target = Target,
          history = OldHistory,
          start_seq = StartSeq,
          current_through_seq = {_Ts, NewSeq} = NewTsSeq,
          source_log = SourceLog,
          target_log = TargetLog,
  
negative.code:     committed_seq,
      current_through_seq,
      seqs_in_progress = [],
      highest_seq_done = {0, ?LOWEST_SEQ},
      source_log,
      target_log,
      rep_starttime,
  