anchor.diff:                                     {max_affected_items, MaxAffectedItems},
                                      {fail_rate_target_per_node, {EffectiveFr_I, EffectiveFr_L}},
                                      {fail_rate_target_phase1, FR_p1},
  -                                   {pref_used_fr, PrevUsedFr},
  +                                   {prev_used_fr, PrevUsedFr},
                                      {icount, MyLastMaxItemsCount},
                                      {oicount, OtherLastMaxItemsCount}]}) ->
       {RTree, SyncNew, NStats, MyMaxItemsCount,
  
positive.code:                          stats = Stats2, params = MySyncParams,
                           misc = [{fail_rate_target_per_node, FRTotal_p1_perNode},
                                   {fail_rate_target_phase1, FRTotal_p1},
                                   {pref_used_fr, {0.0, 0.0}},
                                   {icount, ItemCount}],
                           kv_list = []};
  begin_sync(State = #rr_recon_state{method = merkle_tree, params = Params, initiator = true,
  
negative.code:                             misc = [{max_affected_items, MaxAffectedItems},
                                      {fail_rate_target_per_node, LastFRPerNode},
                                      {fail_rate_target_phase1, FR_p1},
                                      {prev_used_fr, PrevUsedFr},
                                      {icount, MyItemCount}]});
  
  on({?check_nodes, ToCheck0, OtherMaxItemsCount},
  