diff --git a/A00_Common/design/design_pipeline_page.ts b/A00_Common/design/design_pipeline_page.ts
index 3103c59f7..04d89ca2d 100644
--- a/A00_Common/design/design_pipeline_page.ts
+++ b/A00_Common/design/design_pipeline_page.ts
@@ -27,7 +27,7 @@ import { createDesignPipeline, publishToStore, type DesignPipeline } from "./log
 import { SOURCE_INPUT } from "./logic/design_pipeline_types";
 export { pipelineWork } from "./logic/design_pipeline";
 import { pipelineCrossSource, type PipelineCrossSource } from "./design_pipeline_cross";
-import { createStationsStage, stationDiff } from "./logic/design_pipeline_stations";
+import { createStationsStage, snapOptions, stationDiff } from "./logic/design_pipeline_stations";
 import type {
   ChangeSource,
   FollowPatch,
@@ -298,12 +298,7 @@ function createPagePipeline(
         route.curves,
         (patch.pipes ?? inputs.pipes ?? []) as PlanPipe[],
         (patch.structures ?? inputs.structures ?? []) as PlanStructure[],
-        {
-          intervalM: options.stationIntervalM,
-          types: enabled,
-          stationSnap: inputs.route?.stationSnap ?? false,
-          stationSnapStep: inputs.route?.stationSnapStep,
-        },
+        { intervalM: options.stationIntervalM, types: enabled, ...snapOptions(inputs.route, plan) },
       ).map((station) => station.chainageM),
   });
   /** 다시 셈 창구가 낸 cross 출력(365-4) — 엔진 재사용에서 뺌. */
@@ -342,7 +337,11 @@ function createPagePipeline(
         };
         return followStage({ ...ctx, inputs });
       },
-      stations: createStationsStage({ intervalM: options.stationIntervalM, types: () => enabled }),
+      stations: createStationsStage({
+        intervalM: options.stationIntervalM,
+        types: () => enabled,
+        saved: () => plan,
+      }),
       ground: createGroundStage(groundDeps),
       planline: createPlanlineStage({
         savedBase: (at) => options.plantedBase?.(savedSource(), at, types) ?? savedSource().base,
diff --git a/A00_Common/design/logic/design_pipeline_stations.ts b/A00_Common/design/logic/design_pipeline_stations.ts
index c2df06dc0..9c4d19d62 100644
--- a/A00_Common/design/logic/design_pipeline_stations.ts
+++ b/A00_Common/design/logic/design_pipeline_stations.ts
@@ -17,6 +17,7 @@ import type {
 import type {
   PipelineRunRecord,
   PipelineStation,
+  RouteDraft,
   StageContext,
   StageFn,
 } from "./design_pipeline_types";
@@ -41,12 +42,30 @@ export function reuseOutside(
   });
 }
 
-/** stations 단계 — 입력 관 · 구조물(follow 뒤 누가거리) · 그린 노선 · 곡선표 · 노선 초안 스냅. */
+/** 저장 노선의 측점 스냅 설정(`RoutePlanResponse` 칸). */
+export interface SavedSnap {
+  station_snap?: boolean;
+  station_snap_step?: number | null;
+}
+
+/** 측점 스냅 설정 — 노선 초안이 있으면 그 값 · 없으면 저장 노선 값(441 · 저장 스냅 노선 측점 어긋남). */
+export function snapOptions(
+  draft: RouteDraft | null | undefined,
+  saved: SavedSnap | null | undefined,
+): Pick<StationsOptions, "stationSnap" | "stationSnapStep"> {
+  return draft
+    ? { stationSnap: draft.stationSnap, stationSnapStep: draft.stationSnapStep }
+    : { stationSnap: saved?.station_snap ?? false, stationSnapStep: saved?.station_snap_step };
+}
+
+/** stations 단계 — 입력 관 · 구조물(follow 뒤 누가거리) · 그린 노선 · 곡선표 · 스냅(초안 · 없으면 저장 노선). */
 export function createStationsStage(
   options: Omit<StationsOptions, "stationSnap" | "stationSnapStep" | "types"> & {
     types: () => ReadonlyArray<PlanType>;
+    saved?: () => SavedSnap | null;
   },
 ): StageFn<"stations"> {
+  const { saved, ...rest } = options;
   return (ctx: StageContext<"stations">) => {
     const route = ctx.out.route;
     if (!route) return [];
@@ -55,12 +74,7 @@ export function createStationsStage(
       route.curves,
       (ctx.inputs.pipes as PlanPipe[] | null) ?? [],
       (ctx.inputs.structures as PlanStructure[] | null) ?? [],
-      {
-        ...options,
-        types: options.types(),
-        stationSnap: ctx.inputs.route?.stationSnap ?? false,
-        stationSnapStep: ctx.inputs.route?.stationSnapStep,
-      },
+      { ...rest, types: options.types(), ...snapOptions(ctx.inputs.route, saved?.()) },
     );
     return reuseOutside(next, ctx.prev, ctx.range);
   };
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit.ts b/B05_Profile/B05_Profile_UI_RouteEdit.ts
index 85adc5795..3fc47eccc 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit.ts
@@ -544,6 +544,7 @@ export async function mountRouteEditor(
       if (base) markEdited();
       return base !== undefined;
     },
+    offStation: () => (stationSnap ? fit.offStationCount(plannedLine, curveInfo, snap()) : 0),
   });
 
   bindNodeSplice({
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit_Keys.ts b/B05_Profile/B05_Profile_UI_RouteEdit_Keys.ts
index d57b14104..c7db6c03d 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit_Keys.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit_Keys.ts
@@ -31,6 +31,8 @@ interface Hold {
   start: Vertex;
   /** 스냅 미리보기 전 노선(맞추기 전) — 다음 걸음 · 하한 검사는 여기서(맞춤이 쌓이지 않음). */
   raw: Vertex[] | null;
+  /** 누를 때 측점 밖 곡선 수(441) — 미리보기가 이보다 늘면 그 걸음 되돌림. */
+  off: number;
   moved: boolean;
 }
 
@@ -74,8 +76,18 @@ export function bindRouteEditKeys(params: RouteEditPointerParams, dragging: () =
       params.draw();
       return;
     }
-    now.moved = true;
     fitPreview(now, state.planned);
+    if (now.raw && params.offStation() > now.off) {
+      // 맞춰도 MC 가 측점 밖에 남는 자리 — 끌기와 같게 그 걸음만 되돌림(441)
+      const planned = params.state().planned;
+      now.raw.forEach((vertex, index) => (planned[index] = vertex));
+      planned[now.index] = node;
+      fitPreview(now, planned);
+      status.textContent = `${params.routeHead()} — 곡선 가운데를 측점에 못 맞춰 더 못 옮깁니다.`;
+      params.draw();
+      return;
+    }
+    now.moved = true;
     status.textContent = `${params.routeHead()} — 방향키로 옮기는 중(뗄 때 한 걸음). ${params.curveHint()}`;
     params.draw();
   }
@@ -123,6 +135,7 @@ export function bindRouteEditKeys(params: RouteEditPointerParams, dragging: () =
       before: state.planned.map(([x, y]): Vertex => [x, y]),
       start: [node[0], node[1]],
       raw: null,
+      off: params.offStation(),
       moved: false,
     };
     hold = now;
diff --git a/B05_Profile/B05_Profile_UI_RouteEdit_Pointer.ts b/B05_Profile/B05_Profile_UI_RouteEdit_Pointer.ts
index 45f975742..73d635759 100644
--- a/B05_Profile/B05_Profile_UI_RouteEdit_Pointer.ts
+++ b/B05_Profile/B05_Profile_UI_RouteEdit_Pointer.ts
@@ -106,6 +106,8 @@ export interface RouteEditPointerParams {
   /** 끄는 중 · 방향키 걸음 미리보기(390-5) — 스냅 켬이면 IP `index` 자리 그대로 MC 를 간격 배수에 ·
    *  맞췄으면 true(끔이면 false · 아무 일 없음). */
   fitDrag: (index: number) => boolean;
+  /** 측점 밖 곡선 수(스냅 끔 = 0 · 441 끌기 · 방향키 막힘). */
+  offStation: () => number;
 }
 
 export interface RouteEditPointer {
@@ -191,8 +193,10 @@ export function bindRouteEditPointer(params: RouteEditPointerParams): RouteEditP
   /** 이번 끌기에서 **실제로 움직였나** — 그냥 눌러 고르기만 한 것은 되돌릴 걸음이 아니다
    *  (2026-09-07 실화면: 노드를 클릭만 해도 [되돌리기]가 켜졌다). */
   let dragMoved = false;
-  /** 스냅 미리보기 전 자리(390-5) — 하한 검사는 맞춘 선이 아닌 이것으로(맞춤이 IP 를 ±간격/2 밂). */
+  /** 스냅 미리보기 전 자리(390-5) — 하한 검사는 맞춘 선이 아닌 이것으로(맞춤이 IP 를 ±간격 밂). */
   let dragRaw: Vertex[] | null = null;
+  /** 누를 때 측점 밖 곡선 수(441) — 미리보기가 이보다 늘면 그 걸음 되돌림(못 맞추는 자리로 못 끎). */
+  let dragOff = 0;
   /** 구조물 측점 마커(399) — 집기 차례 = 재기 다음 맨 앞(409) · 끌기 · 방향키 1 m. */
   const marks = bindStructureMarks(params, () => dragNode >= 0 || dragHandle !== null);
 
@@ -227,6 +231,7 @@ export function bindRouteEditPointer(params: RouteEditPointerParams): RouteEditP
     // 교각점을 고정한 자리는 **고르기만** 되고 안 끌린다(2026-09-12 사용자 지시 ①).
     dragNode = hitNode >= 0 && state.apexLock[hitNode] !== true ? hitNode : -1;
     dragRaw = null;
+    dragOff = params.offStation();
     dragHandle = hitNode >= 0 ? null : handleAt(px, py);
     dragMoved = false;
     if (hitNode >= 0) {
@@ -353,7 +358,6 @@ export function bindRouteEditPointer(params: RouteEditPointerParams): RouteEditP
       // **지키던 자리가 넘어가는 것만** 막는다(계획서 0-9 ④).
       const before = curveShortfalls(state.nodeInfo, state.limitRadiusM, state.limitArcM);
       const previous = state.planned[dragNode];
-      dragMoved = true;
       state.planned[dragNode] = toMetric(px, py);
       params.markEdited(); // 곡선을 그 자리에서 다시 그린다 — 나머지 곡선은 그대로 남는다.
       const after = params.state();
@@ -372,6 +376,17 @@ export function bindRouteEditPointer(params: RouteEditPointerParams): RouteEditP
         return;
       }
       fitPreview(state.planned); // 스냅 켬 = 끄는 동안 MC 를 간격 배수에(390-5 · 놓을 때 정본)
+      if (dragRaw && params.offStation() > dragOff) {
+        // 맞춰도 MC 가 측점 밖에 남는 자리 — 하한 막힘과 같게 그 걸음만 되돌림(441)
+        const now = params.state().planned;
+        dragRaw.forEach((vertex, index) => (now[index] = vertex));
+        now[dragNode] = previous;
+        fitPreview(now);
+        status.textContent = `${params.routeHead()} — 곡선 가운데를 측점에 못 맞춰 더 못 옮깁니다.`;
+        params.draw();
+        return;
+      }
+      dragMoved = true; // 막힘 검사 뒤 — 막힌 채 놓으면 되돌릴 걸음 없음(433-14)
       // 끄는 동안에도 상태줄이 살아 있어야 한다 — 예전에는 여기서 아무 말이 없어
       // 「곡선이 사라졌다」는 인상만 남았다(2026-09-07 사용자 지적 ②).
       status.textContent = `${params.routeHead()} — 옮기는 중. ${params.curveHint()}`;
diff --git a/B05_Profile/logic/B05_Profile_RouteEdit_StationFit.ts b/B05_Profile/logic/B05_Profile_RouteEdit_StationFit.ts
index 8a9fbd34c..f54583bba 100644
--- a/B05_Profile/logic/B05_Profile_RouteEdit_StationFit.ts
+++ b/B05_Profile/logic/B05_Profile_RouteEdit_StationFit.ts
@@ -3,7 +3,7 @@
  * 측점 스냅 켬 = 곡선 가운데(MC)를 일반측점에(366-3 · 요구 240-11) — 손 편집 평면.
  *
  * 추천 노선 맞춤(`B05_Profile_Engine_RouteInitial_Station.py` `_try` · `_solve`)을 줄인 꼴:
- *   · `from`(`fitStart` = 고친 자리 앞)부터 끝까지 차례로 — 고정 아닌 교각점(IP)을 들어오는 접선 따라 ±간격/2 안에서
+ *   · `from`(`fitStart` = 고친 자리 앞)부터 끝까지 차례로 — 고정 아닌 교각점(IP)을 들어오는 접선 따라 ±간격 안에서
  *     밀어 MC(BC · EC 누가거리 가운데)를 가까운 일반측점(앞 MC 측점 + 간격 이상 · No.1 이상)에 둠.
  *   · 곡선 하한을 새로 깨거나(`shortfallCrossed`) 앞 곡선 MC 를 흔들면 버림 → 그 곡선은 그대로.
  *   · 반지름 · 켬끔은 안 바꿈 — IP 자리만. 합치기 · 곡선 끄기 · 되돌아가기 없음.
@@ -113,7 +113,7 @@ function solve(
   if (!(length > 1e-9)) return null;
   const ux = (base[0] - before[0]) / length;
   const uy = (base[1] - before[1]) / length;
-  const reach = limits.intervalM / 2;
+  const reach = limits.intervalM; // 한가운데(18+9 ~ 19+1)도 가까운 측점까지(441 · 반 간격이면 못 닿음)
   const clamp = (d: number): number => Math.max(-reach, Math.min(reach, d));
   const at = (d: number) => {
     const next = planned.slice();
diff --git a/resources/tester/helper_266_card_toggle.mjs b/resources/tester/helper_266_card_toggle.mjs
index ffb22fe62..33f07986e 100644
--- a/resources/tester/helper_266_card_toggle.mjs
+++ b/resources/tester/helper_266_card_toggle.mjs
@@ -95,15 +95,17 @@ async function toggles(projectId, shift) {
   const steps = [];
   const run = async (tag) => {
     const updated = [];
+    let calls = 0; // 받는 쪽 = 카드 다시 그림 + 종단 · 유토 다시 그림(design_shared) — 한 걸음에 한 번
     const out = await m.refreshSavedCross(
       { projectId, routeId: R, detail, edits: EDITS, alignment },
       stations,
-      (rows) => updated.push(...rows),
+      (rows) => (calls++, updated.push(...rows)),
     );
     steps.push({
       tag,
       out: out ? Object.keys(out.byKey).length : null,
       updated,
+      calls,
       ...pick(target.design),
     });
   };
@@ -126,6 +128,9 @@ async function toggles(projectId, shift) {
     m.writeCrossDesignChoice(projectId, R, target.chainage_m, { ...choice });
     await run(tag);
   }
+  // 사면 이동 한 걸음(B06 ◀▶ 0.1 m · 깎기 쪽 · 441 · 요구 268-4)
+  m.writeShoulderExtend(projectId, R, target.chainage_m, job.mode.split("_")[0], 0.1);
+  await run("slope");
   return { target: target.chainage_m, steps };
 }
 
diff --git a/resources/tester/helper_266_card_toggle_entry.ts b/resources/tester/helper_266_card_toggle_entry.ts
index 4ec8245d0..bc2b48863 100644
--- a/resources/tester/helper_266_card_toggle_entry.ts
+++ b/resources/tester/helper_266_card_toggle_entry.ts
@@ -1,5 +1,8 @@
 /* PLAN 439 시험 묶음 진입점 — 저장 노선 cross 차례(카드 단추 → 다시 셈 · 측점 어긋남) · 진짜 모듈 · vite ssr. */
 export { refreshSavedCross } from "../../A00_Common/design/design_shared";
-export { writeCrossDesignChoice } from "../../B06_Section/B06_Section_Cross_Design_Session";
+export {
+  writeCrossDesignChoice,
+  writeShoulderExtend,
+} from "../../B06_Section/B06_Section_Cross_Design_Session";
 export { rememberRockBoundaryDefault } from "../../B06_Section/B06_Section_UI_Standard_Panel";
 export { writeState } from "../../A00_Common/b_page_state";
diff --git a/resources/tester/helper_344_3_pipeline_stations.cjs b/resources/tester/helper_344_3_pipeline_stations.cjs
index 45d4a74a5..b7508c923 100644
--- a/resources/tester/helper_344_3_pipeline_stations.cjs
+++ b/resources/tester/helper_344_3_pipeline_stations.cjs
@@ -78,4 +78,24 @@ out.move = {
   same: after.map((s) => byKey.get(s.key) === s),
   empty: run(null, null, null, null),
 };
+// 441 — 초안 없는 저장 노선 = 저장 스냅 설정 따름 · 초안이 있으면 초안 값(스냅 case = cases[1])
+const snapCase = job.cases[1];
+const savedRun = (route, saved) =>
+  stage
+    .createStationsStage({ types: () => job.types, saved: () => saved })({
+      generation: 1,
+      range: null,
+      signal: new AbortController().signal,
+      inputs: { route, pipes: job.pipes, structures: job.structures },
+      out: { route: { line: snapCase.line, curves: snapCase.curves, chainage: [], lengthM: 0 } },
+      before: {},
+      prev: null,
+    })
+    .map((s) => s.chainageM);
+out.savedSnap = {
+  saved: savedRun(null, { station_snap: true, station_snap_step: null }),
+  savedOff: savedRun(null, { station_snap: false }),
+  noPlan: savedRun(null, null),
+  draftWins: savedRun({ stationSnap: false }, { station_snap: true }),
+};
 process.stdout.write(JSON.stringify(out));
diff --git a/resources/tester/helper_390_5_snap_step_ops.cjs b/resources/tester/helper_390_5_snap_step_ops.cjs
index bc613af8c..da8e57ca5 100644
--- a/resources/tester/helper_390_5_snap_step_ops.cjs
+++ b/resources/tester/helper_390_5_snap_step_ops.cjs
@@ -128,6 +128,82 @@ const drag = Object.fromEntries(
   }),
 );
 
+// ④ 끌기 훑기(441) — 편집 창 끌기 차례(`_Pointer`) 그대로: 하한 막힘 · 미리보기 측점 밖이 누를 때보다 늘면
+//    그 걸음 되돌림 · 놓을 때 정본 맞춤(`applyEdit`). 측점 No. · IP 셋 × 12 방향 × 3 거리 · 고정 R(곡선표 반경 못박음).
+const edits = loadTs(path.join(LOGIC, "B05_Profile_UI_RouteEdit_Edits.ts"));
+const copy = (c) => ({
+  ...c,
+  planned: c.planned.map(([x, y]) => [x, y]),
+  curveRadius: [...c.curveRadius],
+});
+function sweep(fixedR) {
+  const start = columns(fit.fitCurveStations(columns(ROUTE), LIMITS, 1));
+  if (fixedR)
+    start.curveRadius = edits
+      .rebuildLine(copy(start), LIMITS)
+      .nodes.map((n) => (n.radius_m === null ? null : Math.round(n.radius_m * 100) / 100));
+  const floor = (built) =>
+    edits.curveShortfalls(built.nodes, LIMITS.limitRadiusM, LIMITS.limitArcM);
+  const off = (built) => fit.offStationCount(built.vertices, built.curves, INTERVAL);
+  const tally = { drags: 0, released: 0, offAfter: 0, strayed: 0, worst: [] };
+  for (const K of [2, 3, 4])
+    for (let deg = 0; deg < 360; deg += 30)
+      for (const reach of [9, 17, 26]) {
+        const hist = copy(start);
+        let st = copy(hist);
+        let built = edits.rebuildLine(st, LIMITS);
+        const offBefore = off(built);
+        let raw = null;
+        let movedOnce = false;
+        const preview = () => {
+          raw = st.planned.map(([x, y]) => [x, y]);
+          st = { ...st, planned: fit.fitDrag(st, hist.planned, K, LIMITS) };
+          built = edits.rebuildLine(st, LIMITS);
+        };
+        const p0 = hist.planned[K];
+        for (let t = 0.5; t <= reach + 1e-9; t += 0.5) {
+          if (raw) raw.forEach((v, i) => (st.planned[i] = v));
+          built = edits.rebuildLine(st, LIMITS);
+          const before = floor(built);
+          const previous = st.planned[K];
+          st.planned[K] = [
+            p0[0] + Math.cos((deg * Math.PI) / 180) * t,
+            p0[1] + Math.sin((deg * Math.PI) / 180) * t,
+          ];
+          built = edits.rebuildLine(st, LIMITS);
+          if (edits.shortfallCrossed(before, floor(built))) {
+            st.planned[K] = previous;
+            preview();
+            continue;
+          }
+          preview();
+          if (off(built) > offBefore) {
+            raw.forEach((v, i) => (st.planned[i] = v));
+            st.planned[K] = previous;
+            preview();
+            tally.strayed += 1;
+            continue;
+          }
+          movedOnce = true;
+        }
+        tally.drags += 1;
+        if (!movedOnce) continue;
+        built = edits.rebuildLine(st, LIMITS);
+        if (edits.floorStop(hist, st.planned, built.nodes, LIMITS)) continue;
+        const from = fit.fitStart(hist, st);
+        st = { ...st, planned: fit.fitCurveStations(st, LIMITS, from) };
+        built = edits.rebuildLine(st, LIMITS);
+        tally.released += 1;
+        const left = fit.offStationMcs(built.vertices, built.curves, INTERVAL);
+        if (left.length) {
+          tally.offAfter += 1;
+          if (tally.worst.length < 5) tally.worst.push({ K, deg, reach, mc: left });
+        }
+      }
+  return tally;
+}
+const swept = { auto: sweep(false), fixed: sweep(true) };
+
 // ③ MC 측점 값 · 눈금 글
 const input = JSON.parse(process.argv[2] || '{"grid":[],"spans":[]}');
 const snapped = Object.fromEntries(
@@ -147,5 +223,12 @@ const labels = {
 };
 
 console.log(
-  JSON.stringify({ keys, drag, snapped, labels, scale: [0.1, 1, 10, null].map(frame.mcScale) }),
+  JSON.stringify({
+    keys,
+    drag,
+    swept,
+    snapped,
+    labels,
+    scale: [0.1, 1, 10, null].map(frame.mcScale),
+  }),
 );
diff --git a/resources/tester/test_266_card_toggle_mismatch.py b/resources/tester/test_266_card_toggle_mismatch.py
index 6d2d73835..30e03293d 100644
--- a/resources/tester/test_266_card_toggle_mismatch.py
+++ b/resources/tester/test_266_card_toggle_mismatch.py
@@ -4,6 +4,7 @@
   - 저장 노선 cross 차례(`refreshSavedCross`) = 카드 자료(상세 설계)를 **늘** 다시 셈 —
     복합경사 · 측구 · 지반 단추마다 그 측점 설계선 · 면적이 바뀜.
   - 묶음 측점 = 상세 측점이면 돌려줌 · 1 mm 넘게 다르면 null(묶음 엔진) — 그래도 카드 자료는 고침.
+  - 사면 이동 한 걸음도 같음 · 걸음마다 받는 쪽(카드 · 종단 · 유토 다시 그림) 한 번(441 · 요구 268-2 · 4).
   - 서버 폴백(선형 저장분 없음)에도 카드 선택이 실림(열쇠 = 측점 자리) · 서버는 저장분 위에 얹음.
 짝: `helper_266_card_toggle.mjs` · 진입점 `helper_266_card_toggle_entry.ts` ·
 지형 · 노선 틀 = `test_346_2_pipeline_cross_page.py`.
@@ -99,7 +100,8 @@ def _check_toggles(case: dict, returned) -> None:
     steps = {step["tag"]: step for step in case["steps"]}
     assert steps["open"]["cut"] > 0.5  # 깎기 측점
     before = steps["open"]
-    for tag in ("two_stage", "ditch_off", "soil"):
+    assert all(step["calls"] == 1 for step in case["steps"])  # 걸음마다 다시 그림 한 번(441)
+    for tag in ("two_stage", "ditch_off", "soil", "slope"):
         step = steps[tag]
         assert case["target"] in step["updated"], tag  # 카드 다시 그림 대상
         assert step["line"] != before["line"], tag  # 카드 설계선 바뀜
diff --git a/resources/tester/test_344_3_pipeline_stations_mirror.py b/resources/tester/test_344_3_pipeline_stations_mirror.py
index 196fcfe58..3c634451d 100644
--- a/resources/tester/test_344_3_pipeline_stations_mirror.py
+++ b/resources/tester/test_344_3_pipeline_stations_mirror.py
@@ -264,6 +264,17 @@ def test_스냅_측점은_원래_격자_번호(r):
     assert moved and all(abs(a - b) <= 10 for a, b in moved.values())
 
 
+def test_초안_없으면_저장_스냅_따름(r):
+    """441 — 초안 없는 저장 노선 측점 단계 = 저장 station_snap · 초안이 있으면 초안 값."""
+    snapped = [s["chainageM"] for s in r["cases"][1]]
+    plain = [s["chainageM"] for s in r["cases"][0]]
+    assert snapped != plain
+    got = r["savedSnap"]
+    assert got["saved"] == snapped
+    assert got["savedOff"] == plain and got["noPlan"] == plain
+    assert got["draftWins"] == plain
+
+
 def test_노선_한_점_옮김_앞_구간_열쇠_그대로(r):
     m = r["move"]
     from_m = _first_changed_m()
diff --git a/resources/tester/test_390_5_snap_step_ops.py b/resources/tester/test_390_5_snap_step_ops.py
index 3b7c3e9fe..e1813cbbe 100644
--- a/resources/tester/test_390_5_snap_step_ops.py
+++ b/resources/tester/test_390_5_snap_step_ops.py
@@ -80,7 +80,17 @@ def test_끄는_동안_MC_가_간격_배수(got, step) -> None:
     drag = got["drag"][step]
     assert drag["off"] == 0
     assert max(drag["residues"]) <= drag["tol"]
-    assert drag["dragMoved"] <= float(step) / 2 + 1e-6  # 끈 IP 는 접선 따라 ±간격/2 안만
+    assert drag["dragMoved"] <= float(step) + 1e-6  # 끈 IP 는 접선 따라 ±간격 안만(441)
+
+
+@pytest.mark.parametrize("mode", ["auto", "fixed"])
+def test_끌기_훑기_놓은_뒤_측점_밖_0(got, mode) -> None:
+    """441 — 측점 No. 끌기(IP 셋 × 12 방향 × 3 거리) · 놓은 뒤 MC 가 다 측점 위 · 맞춤이 늘 닿음
+    (반 간격 한도면 18+9 ~ 19+1 에서 못 맞춰 막힘 걸음이 생김)."""
+    swept = got["swept"][mode]
+    assert swept["drags"] == 108 and swept["released"] > 0
+    assert swept["offAfter"] == 0, swept["worst"]
+    assert swept["strayed"] == 0
 
 
 @pytest.mark.parametrize("step", ["0.1", "1", "10", "20"])
@@ -101,6 +111,12 @@ def test_끌기_방향키_편집기_이음() -> None:
     # 하한 검사는 맞추기 전 노선으로(맞춤이 IP 를 ±간격/2 밀어 10 m · 측점 No. 에서 헛걸림)
     assert "dragRaw.forEach((vertex, index) => (state.planned[index] = vertex))" in pointer
     assert "now.raw.forEach((vertex, index) => (state.planned[index] = vertex))" in keys
+    # 미리보기 측점 밖이 누를 때보다 늘면 그 걸음 되돌림 · 막힘 검사 뒤에 옮김 표시(441 · 433-14)
+    assert "params.offStation() > dragOff" in pointer and "params.offStation() > now.off" in keys
+    move = pointer[pointer.index("const previous = state.planned[dragNode];") :]
+    assert move.index("shortfallCrossed(") < move.index("params.offStation() > dragOff")
+    assert move.index("params.offStation() > dragOff") < move.index("dragMoved = true;")
+    assert "offStation: () => (stationSnap ? fit.offStationCount(" in edit
     assert edit.count("\n") <= 695
 
 
@@ -193,6 +209,9 @@ def test_서버_측점_셈이_저장_간격을_씀() -> None:
     page = (design / "design_pipeline_page.ts").read_text(encoding="utf-8")
     assert "stationSnapStep: routePlan.station_snap_step" in page
     stage = (design / "logic" / "design_pipeline_stations.ts").read_text(encoding="utf-8")
-    assert "stationSnapStep: ctx.inputs.route?.stationSnapStep" in stage
+    assert "...snapOptions(ctx.inputs.route, saved?.())" in stage  # 초안 · 없으면 저장 노선(441)
+    assert "stationSnapStep: draft.stationSnapStep" in stage
+    assert "stationSnapStep: saved?.station_snap_step" in stage
+    assert "saved: () => plan" in page and "...snapOptions(inputs.route, plan)" in page
     apply = (B05 / "B05_Profile_UI_RouteEdit_Apply.ts").read_text(encoding="utf-8")
     assert "stationSnap: true, stationSnapStep: null" in apply  # 추천 = 측점 No.