anchor.diff:                                 RegenOk, RegenFail, FBItems, OtherKvTree, FBOn) ->
       NewFBItems =
           if not Done andalso Exists andalso FBOn ->
  -               case gb_trees:lookup(db_entry:get_key(Entry), OtherKvTree) of
  +               case any_replica_in_tree(?RT:get_replica_keys(db_entry:get_key(Entry)), OtherKvTree) of
                      none -> [entry_to_kvv(Entry) | FBItems];
                      {value, OtherVersion} ->
                          MyVersion = db_entry:get_version(Entry),
  
positive.code:        not Done and not Exists ->
             integrate_update_key_entries_ack(
               Rest, UpdOk, UpdFail, RegenOk, RegenFail + 1, NewFBItems, OtherKvTree, FBOn)
      end.
  
  -spec shutdown(exit_reason(), state()) -> kill.
  
negative.code: make_other_kv_tree(KVV) ->
      gb_trees:from_orddict(
            orddict:from_list(
              [{KeyX, VersionX} || {KeyX, _ValX, VersionX} <- KVV])).
  
  -spec send_request_resolve(Dest::comm:mypid(), Op::operation(),
                             SID::rrepair:session_id() | null,
  