anchor.diff:                               [Idx || {_Version, Idx} <- gb_trees:values(OBucketTree1)]
                                    ++ ToReqIdx1),
                     ToResolve1 = pos_to_bitstring(ReqIdx, ToResolve, 0,
  -                                                Params#merkle_params.bucket_size + 1),
  +                                                Params#merkle_params.bucket_size),
                     {NHashes, ToSend1, ToResolve1,
                      ?IIF(ReqIdx =/= [], true, ResolveNonEmpty),
                      LeafNAcc + LeafCount}
  
positive.code: merkle_resolve_leaves_ckidx([{_OtherMaxItemsCount, MyKVItems, _LeafCount} | TL],
                               BinKeyList0,
                               DestRRPid, Stats, OwnerL, Params, ToSend, IsInitiator) ->
      Positions = Params#merkle_params.bucket_size + 1,
      <<ReqKeys:Positions/bitstring-unit:1, BinKeyList/bitstring>> = BinKeyList0,
      ToSend1 = bitstring_to_k_list_kv(ReqKeys, MyKVItems, ToSend),
      merkle_resolve_leaves_ckidx(TL, BinKeyList, DestRRPid, Stats, OwnerL, Params,
  
negative.code:     ReqIdx = lists:usort([Idx || {_Version, Idx} <- gb_trees:values(DBChunkTree1)] ++ ToReqIdx1),
      ToReq2 = erlang:list_to_bitstring(
                 lists:reverse(
                   pos_to_bitstring(% note: ReqIdx positions start with 0
                     ReqIdx, [], 0, ?IIF(ReqIdx =:= [], 0, lists:last(ReqIdx) + 1)))),
      ?TRACE("resolve_req ~s Session=~p ; ToReq= ~p bytes",
             [_RMethod, SID, erlang:byte_size(ToReq2)]),
      comm:send(DestReconPid, {resolve_req, ToReq2}),
  