规范了update data的构建方式，统一使用build_update_request_data方法来处理更新数据的构建和过滤逻辑。这个方法会根据提供的原始数据、更新数据和对应的schema来生成最终的更新请求数据，同时会自动排除掉未变化的字段和空值字段，从而确保只发送必要的更新信息到后端接口。这种方式不仅简化了代码逻辑，还提高了代码的可维护性和一致性。

tests/integration/test_strategy_business_points_migrated.py

@@ -193,6 +193,30 @@ async def test_auto_binding_skip_on_ambiguous_migrated(setup_env):
     assert await bm.get_local_id("test_project", "r1") is None
 
 
+@pytest.mark.asyncio
+async def test_auto_binding_many_to_one_can_bind_stable_pick_and_leave_rest_for_create(setup_env):
+    local, remote, bm, _ = setup_env
+
+    strategy = TestProjectStrategy("test_project", local, remote, bm)
+    strategy.update_config(
+        auto_bind=True,
+        auto_bind_fields=["code"],
+        depend_fields={},
+        local_orphan_action=OrphanAction.CREATE_REMOTE,
+        allow_many_to_one_auto_bind=True,
+    )
+
+    await local.add(build_project_node("l2", "P2", name="B", code="AMB-2"))
+    await local.add(build_project_node("l1", "P1", name="A", code="AMB-2"))
+    await remote.add(build_project_node("r1", "RP1", name="A", code="AMB-2"))
+
+    await strategy.bind()
+
+    assert await bm.get_remote_id("test_project", "l1") == "r1"
+    assert await bm.get_remote_id("test_project", "l2") is None
+    assert await bm.get_local_id("test_project", "r1") == "l1"
+
+
 @pytest.mark.asyncio
 async def test_pre_bind_data_id_works_when_auto_bind_disabled(setup_env):
     local, remote, bm, _ = setup_env