diff --git a/A00_Common/design/design_save.ts b/A00_Common/design/design_save.ts
index b5dd3183b..2edfd617b 100644
--- a/A00_Common/design/design_save.ts
+++ b/A00_Common/design/design_save.ts
@@ -220,6 +220,8 @@ export async function saveDesign(
           }
           continue;
         }
+        // 상단측은 옛 누가거리 열쇠 — 노선이 바뀌면 횡단 차례(`carryAfterRouteSave`)가 새 측점으로 옮긴 뒤 보냄(443-2)
+        if (step === "uphill" && routeSaved) continue;
         // 노선이 바뀌면 화면 몫 일(옛 노선 판 목록 · 계획고 판)은 건너뛰고 기본 창구만 새 노선으로.
         const own = routeSaved ? undefined : ctx.steps?.[step];
         const base = defaultStep(step, ctx.projectId, routeId, fromRouteId);
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit_Apply.ts b/B05_Profile/B05_Profile_UI_RouteEdit_Apply.ts
index 0a78128db..e1dedb512 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit_Apply.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit_Apply.ts
@@ -11,7 +11,7 @@
  * 실패하면 서버가 옛 노선으로 되살리고 화면 초안은 그대로 남는다(오류 한 줄은 부르는 쪽).
  * ========================================================================== */
 
-import { clearDrafts, clearResults } from "../A00_Common/b_page_state";
+import { clearDrafts, clearResults, readState } from "../A00_Common/b_page_state";
 import type { RouteDraft } from "../A00_Common/design/logic/design_pipeline_types";
 import { useDesignStore } from "../A00_Common/design/design_store";
 import { currentRoute, remountRoute } from "../A00_Common/router";
@@ -29,7 +29,7 @@ import {
 import { withCarriedEdits, withDraftAdjusts } from "../B06_Section/B06_Section_Section_Adjusts";
 import { fetchDetailPipePoints } from "../B04_PreProcess/B04_PreProcess_Api_Fetch";
 import { pipeChainageOf } from "../A00_Common/design/design_pipe_ids";
-import { clearRouteLatestCache } from "./B05_Profile_Api_Fetch";
+import { clearRouteLatestCache, flushUphillOverrides } from "./B05_Profile_Api_Fetch";
 import {
   replanRoute,
   type RouteReplanResponse,
@@ -180,9 +180,16 @@ export async function carryAfterRouteSave(
   // 옛 저장 관 자리에 남은 고침(초안으로 안 따라감) = 같은 관 id 의 새 자리
   const movedAt = (chainageM: number): number | null =>
     newAt(before.find((pipe) => Math.abs(pipe.chainage_m - chainageM) < 0.01)?.id);
+  const uphillCount = (): number => Object.keys(readState("uphill", projectId) ?? {}).length;
+  const uphillBefore = uphillCount();
   const outside =
     carryStationDrafts(projectId, fromRouteId, toRouteId, { quiet: true }) +
     carryChainageStates(projectId, fromRouteId, toRouteId, { keyAt: pipeAt, movedAt });
+  // 상단측 = 새 측점으로 옮긴 것만 횡단 패치 앞에 보냄(443-2 · 옛 누가거리로 엉뚱한 측점에 안 얹힘)
+  const uphillDropped = uphillBefore - uphillCount();
+  if (uphillDropped > 0)
+    showToast(`상단측 ${uphillDropped}곳 — 새 노선에 같은 측점이 없어 뺐습니다.`, "info");
+  await flushUphillOverrides(projectId);
   // 옮긴 고침을 새 상세 설계 칸에 — 같은 [저장]의 횡단 패치가 실음(사면 쉬프트 · 조절 · 소단 깊이 · 417)
   withDraftAdjusts(detail, projectId, toRouteId);
   withCarriedEdits(detail, projectId, toRouteId);
diff --git a/B06_Section/B06_Section_Station_Keys.ts b/B06_Section/B06_Section_Station_Keys.ts
index e63b1f823..3ca4309c7 100644
--- a/B06_Section/B06_Section_Station_Keys.ts
+++ b/B06_Section/B06_Section_Station_Keys.ts
@@ -68,6 +68,7 @@ export const ROUTE_CARRY_STATES = {
   "detail-table": ["detail_table"],
   shoulderext: ["shoulder_extend_left_m", "shoulder_extend_right_m"],
   bermdepth: ["berm_depth_left_m", "berm_depth_right_m"],
+  uphill: [], // 상단측(측구 방향) — 프로젝트 칸 · 설계 칸 없음 · 노선 바뀐 저장 때 새 측점으로(443-2)
 } as const;
 /** 구조물 조절 칸 — 관 · 구조물 열쇠 측점만 따라감(서버 `carry_cross_inputs` 와 같음). */
 const STRUCTURE_STATES = new Set<string>([
diff --git a/resources/tester/helper_346_3_route_save.cjs b/resources/tester/helper_346_3_route_save.cjs
index 43d6c9a6c..f23f3cafe 100644
--- a/resources/tester/helper_346_3_route_save.cjs
+++ b/resources/tester/helper_346_3_route_save.cjs
@@ -61,7 +61,10 @@ const STUBS = {
     fetchDetailPipePoints: async () => (calls.push("pipes"), { pipe_points: [] }),
   },
   "../A00_Common/design/design_pipe_ids": { pipeChainageOf: () => null },
-  "./B05_Profile_Api_Fetch": { clearRouteLatestCache: () => calls.push("latest:clear") },
+  "./B05_Profile_Api_Fetch": {
+    clearRouteLatestCache: () => calls.push("latest:clear"),
+    flushUphillOverrides: async () => calls.push("uphill"), // 옮긴 뒤 · 횡단 패치 앞(443-2)
+  },
   "./B05_Profile_Api_Replan": {
     replanRoute: async (_p, body) => {
       bodies.push(JSON.parse(JSON.stringify(body)));
diff --git a/resources/tester/helper_443_2_entry.ts b/resources/tester/helper_443_2_entry.ts
new file mode 100644
index 000000000..80b1803b4
--- /dev/null
+++ b/resources/tester/helper_443_2_entry.ts
@@ -0,0 +1,5 @@
+/* 443-2 시험 묶음 진입점 — 노선 바뀐 [저장] 때 상단측(uphill)을 측점 열쇠로 새 측점에 옮김.
+ * Node 헬퍼 = helper_443_2_uphill_carry.mjs · 짝 = test_443_2_uphill_carry.py.
+ */
+export { carryChainageStates, useStationKeyList } from "../../B06_Section/B06_Section_Station_Keys";
+export { readState, writeState } from "../../A00_Common/b_page_state";
diff --git a/resources/tester/helper_443_2_uphill_carry.mjs b/resources/tester/helper_443_2_uphill_carry.mjs
new file mode 100644
index 000000000..aa1c00f4f
--- /dev/null
+++ b/resources/tester/helper_443_2_uphill_carry.mjs
@@ -0,0 +1,61 @@
+/* 443-2 헬퍼 — vite ssr 로 묶은 진짜 모듈(helper_443_2_entry.ts)을 부르고 결과를 JSON 한 벌로.
+ *   node helper_443_2_uphill_carry.mjs <묶음.mjs>
+ */
+import { pathToFileURL } from "node:url";
+
+const store = () => {
+  const m = new Map();
+  return {
+    getItem: (k) => (m.has(k) ? m.get(k) : null),
+    setItem: (k, v) => m.set(k, String(v)),
+    removeItem: (k) => m.delete(k),
+    key: (i) => [...m.keys()][i] ?? null,
+    get length() {
+      return m.size;
+    },
+    clear: () => m.clear(),
+  };
+};
+globalThis.window = globalThis;
+globalThis.sessionStorage = store();
+globalThis.localStorage = store();
+const any = new Proxy(function () {}, {
+  get: (_t, k) => (k === Symbol.toPrimitive ? () => 0 : any),
+  apply: () => any,
+  construct: () => any,
+});
+globalThis.document = any;
+globalThis.requestAnimationFrame = (run) => setTimeout(run, 0);
+
+const m = await import(pathToFileURL(process.argv[2]).href);
+const P = "p443";
+const grid = (pairs) => pairs.map(([key, chainageM]) => ({ key, chainageM }));
+// 옛 노선 = 20 m 일반측점 넷 · 새 노선 = 같은 번호가 밀림(21.5 · 43) · grid:3(60 m) 사라짐
+m.useStationKeyList(
+  P,
+  7,
+  grid([
+    ["end:BP", 0],
+    ["grid:1", 20],
+    ["grid:2", 40],
+    ["grid:3", 60],
+  ]),
+);
+m.useStationKeyList(
+  P,
+  8,
+  grid([
+    ["end:BP", 0],
+    ["grid:1", 21.5],
+    ["grid:2", 43],
+  ]),
+);
+m.writeState("uphill", { "20.000": "right", "40.000": "left", "60.000": "right" }, P);
+const outside = m.carryChainageStates(P, 7, 8);
+const moved = m.readState("uphill", P);
+// 세션이 없으면 그대로(빈 칸 안 만듦)
+m.writeState("uphill", null, P);
+const outsideEmpty = m.carryChainageStates(P, 7, 8);
+process.stdout.write(
+  JSON.stringify({ outside, moved, outsideEmpty, empty: m.readState("uphill", P) }),
+);
diff --git a/resources/tester/test_346_3_route_save_screen.py b/resources/tester/test_346_3_route_save_screen.py
index ece8870a4..527e91883 100644
--- a/resources/tester/test_346_3_route_save_screen.py
+++ b/resources/tester/test_346_3_route_save_screen.py
@@ -82,6 +82,7 @@ def test_초안_넘김_차례(out):
         "pipes",  # 관 열쇠 → 새 자리(서버가 옮긴 관)
         "carry:7->9:quiet",
         "carryAt:7->9",  # 417 — 조절 · 측점 폭 · 상세 표도 새 노선 측점으로
+        "uphill",  # 443-2 — 상단측도 새 측점으로 옮긴 뒤 · 횡단 패치 앞
         "adjusts:9",
         "edits:9",  # 옮긴 고침을 새 상세 설계 칸에 → 같은 [저장] 횡단 패치
         "crossSave:9",
diff --git a/resources/tester/test_443_2_uphill_carry.py b/resources/tester/test_443_2_uphill_carry.py
new file mode 100644
index 000000000..098311b45
--- /dev/null
+++ b/resources/tester/test_443_2_uphill_carry.py
@@ -0,0 +1,77 @@
+"""PLAN 443-2 — 노선 바꾼 [저장]의 상단측(uphill).
+
+- 옛 누가거리 열쇠 상단측 = 측점 열쇠(옮김 목록 `ROUTE_CARRY_STATES` · 415 · 417 규칙)로 새 노선 측점에.
+- 새 노선에 같은 측점이 없으면 뺌 · 수를 돌려줌(「노선 밖 고침」 · 상단측 알림).
+- 저장 한 줄기: 노선을 저장했으면 상단측 차례는 건너뛰고 `carryAfterRouteSave` 가 옮긴 뒤 · 횡단 패치 앞에 보냄.
+Node 헬퍼 `helper_443_2_uphill_carry.mjs` 가 vite ssr 로 묶은 진짜 모듈(`helper_443_2_entry.ts`)을 부름.
+
+./venv/Scripts/python.exe -m pytest resources/tester/test_443_2_uphill_carry.py -q
+"""
+
+import json
+import subprocess
+from pathlib import Path
+
+import pytest
+
+HERE = Path(__file__).resolve().parent
+ROOT = HERE.parents[1]
+
+
+@pytest.fixture(scope="module")
+def out(tmp_path_factory):
+    work = tmp_path_factory.mktemp("b443_2")
+    build = subprocess.run(
+        [
+            "node",
+            str(ROOT / "config" / "node_modules" / "vite" / "bin" / "vite.js"),
+            "build",
+            "--configLoader",
+            "runner",
+            "--ssr",
+            "../resources/tester/helper_443_2_entry.ts",
+            "--outDir",
+            str(work),
+            "--logLevel",
+            "error",
+        ],
+        cwd=ROOT,
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        timeout=300,
+    )
+    assert build.returncode == 0, build.stderr
+    bundle = next(work.glob("*.js"), None) or next(work.glob("*.mjs"))
+    proc = subprocess.run(
+        ["node", str(HERE / "helper_443_2_uphill_carry.mjs"), str(bundle)],
+        capture_output=True,
+        text=True,
+        encoding="utf-8",
+        timeout=60,
+    )
+    assert proc.returncode == 0, proc.stderr
+    return json.loads(proc.stdout)
+
+
+def test_상단측이_새_노선_같은_측점으로(out):
+    assert out["moved"] == {"21.50": "right", "43.00": "left"}
+
+
+def test_못_맞춘_상단측은_빼고_수를_돌려줌(out):
+    assert out["outside"] == 1
+
+
+def test_세션_없으면_그대로(out):
+    assert out["outsideEmpty"] == 0 and out["empty"] is None
+
+
+def test_노선_저장이면_상단측_차례는_옮긴_뒤():
+    save = (ROOT / "A00_Common" / "design" / "design_save.ts").read_text("utf-8")
+    assert 'if (step === "uphill" && routeSaved) continue;' in save
+    apply = (ROOT / "B05_Profile" / "B05_Profile_UI_RouteEdit_Apply.ts").read_text("utf-8")
+    body = apply.split("export async function carryAfterRouteSave(")[1].split("\n}\n")[0]
+    carry = body.index("carryChainageStates(")
+    flush = body.index("await flushUphillOverrides(projectId)")
+    assert carry < flush < body.index("saveCachedCrossPatches(")  # 옮긴 뒤 · 횡단 패치 앞
+    assert "상단측 ${uphillDropped}곳" in body  # 못 맞춤 알림
diff --git a/resources/tester/test_design_store_save.py b/resources/tester/test_design_store_save.py
index ba80df0fa..900248884 100644
--- a/resources/tester/test_design_store_save.py
+++ b/resources/tester/test_design_store_save.py
@@ -102,8 +102,7 @@ def test_노선이_바뀌면_노선_먼저_뒤_차례는_새_노선(out):
         "plusStations",
         'alignment:9:{"30.000":0.2}',
         "culvert:aislo:draft:culvertopt:p1:7",
-        "uphill",
-        "carry:7->9",
+        "carry:7->9",  # 상단측은 넘김(carryAfterRouteSave)이 새 측점으로 옮긴 뒤 보냄(443-2)
         "summary:9:2",
         "toast:info",
         "done:false",