anchor.diff:                  SlideOp1 = slide_op:reset_send_errors(SlideOp),
                   finish_delta_ack1(State, SlideOp1, NextOpMsg)
           end,
  -    safe_operation(WorkerFun, MyState, MoveFullId, [wait_for_delta_ack], delta_ack);
  +    safe_operation(WorkerFun, MyState, MoveFullId, [wait_for_delta_ack], delta_ack, true);
   
   process_move_msg({move, {send_error, Target, Message, _Reason}, {timeouts, Timeouts}} = _Msg, MyState) ->
       ?TRACE1(_Msg, MyState),
  
positive.code:                 SlideOp1 = slide_op:reset_send_errors(SlideOp),
                  finish_delta1(State, SlideOp1, ChangedData)
          end,
      safe_operation(WorkerFun, MyState, MoveFullId, [wait_for_delta], delta);
  
  % acknowledgement from neighbor that its node received delta for the slide op
  % with the given id and information about how to continue
  
negative.code:                                           MaxTransportEntries, MsgTag, NextOp)
                                  end
                          end,
                      safe_operation(WorkerFun, State, MoveFullId, [wait_for_other], slide, false);
                  _ ->
                      State
              end;
  