diff --git a/vnpy/trader/engine.py b/vnpy/trader/engine.py
index 5a5c066..6a956a1 100644
--- a/vnpy/trader/engine.py
+++ b/vnpy/trader/engine.py
@@ -412,31 +412,16 @@ def process_order_event(self, event: Event) -> None:
         elif order.vt_orderid in self.active_orders:
             self.active_orders.pop(order.vt_orderid)
 
-        # Update to offset converter
-        converter: OffsetConverter = self.offset_converters.get(order.gateway_name, None)
-        if converter:
-            converter.update_order(order)
-
     def process_trade_event(self, event: Event) -> None:
         """"""
         trade: TradeData = event.data
         self.trades[trade.vt_tradeid] = trade
 
-        # Update to offset converter
-        converter: OffsetConverter = self.offset_converters.get(trade.gateway_name, None)
-        if converter:
-            converter.update_trade(trade)
-
     def process_position_event(self, event: Event) -> None:
         """"""
         position: PositionData = event.data
         self.positions[position.vt_positionid] = position
 
-        # Update to offset converter
-        converter: OffsetConverter = self.offset_converters.get(position.gateway_name, None)
-        if converter:
-            converter.update_position(position)
-
     def process_account_event(self, event: Event) -> None:
         """"""
         account: AccountData = event.data
@@ -447,10 +432,6 @@ def process_contract_event(self, event: Event) -> None:
         contract: ContractData = event.data
         self.contracts[contract.vt_symbol] = contract
 
-        # Initialize offset converter for each gateway
-        if contract.gateway_name not in self.offset_converters:
-            self.offset_converters[contract.gateway_name] = OffsetConverter(self)
-
     def process_quote_event(self, event: Event) -> None:
         """"""
         quote: QuoteData = event.data
@@ -582,9 +563,7 @@ def update_order_request(self, req: OrderRequest, vt_orderid: str, gateway_name:
         """
         Update order request to offset converter.
         """
-        converter: OffsetConverter = self.offset_converters.get(gateway_name, None)
-        if converter:
-            converter.update_order_request(req, vt_orderid)
+        pass
 
     def convert_order_request(
         self,
@@ -596,12 +575,7 @@ def convert_order_request(
         """
         Convert original order request according to given mode.
         """
-        converter: OffsetConverter = self.offset_converters.get(gateway_name, None)
-        if not converter:
-            return [req]
-
-        reqs: List[OrderRequest] = converter.convert_order_request(req, lock, net)
-        return reqs
+        return [req]
 
     def get_converter(self, gateway_name: str) -> OffsetConverter:
         """