diff --git a/D03_PlanAnalysis/D03_PlanAnalysis_UI_Page.ts b/D03_PlanAnalysis/D03_PlanAnalysis_UI_Page.ts
index 8f9a1d3fb..dfb9b71b3 100644
--- a/D03_PlanAnalysis/D03_PlanAnalysis_UI_Page.ts
+++ b/D03_PlanAnalysis/D03_PlanAnalysis_UI_Page.ts
@@ -87,7 +87,7 @@ export async function renderD03PlanAnalysis(root: HTMLElement): Promise<void> {
   let epsg = 0;
   let yearStart = new Date().getFullYear();
   let network: PlanNetwork = emptyNetwork(start);
-  let savedJson = "";
+  let savedJson = JSON.stringify(network); // 못 읽은 채 떠남 = 고침 없음
   let undoStack: PlanNetwork[] = [];
   let redoStack: PlanNetwork[] = [];
   let surface: PlanSurface | null = null;
diff --git a/resources/tester/test_560_4_leave_save.py b/resources/tester/test_560_4_leave_save.py
index bcdef0195..252d7223a 100644
--- a/resources/tester/test_560_4_leave_save.py
+++ b/resources/tester/test_560_4_leave_save.py
@@ -64,6 +64,10 @@ def test_de_pages_guard_leave():
         assert "beforeLeave" not in ts, path  # 말없이 저장 없음 — 공용 셋 물음
         if name:
             assert f'discard: () => clearState("{name}", projectId)' in call, path
+    # D03 — 못 읽은 채(프로젝트 없음 · 불러오기 실패) 떠나면 고침 없음
+    assert "let savedJson = JSON.stringify(network);" in _src(
+        "D03_PlanAnalysis/D03_PlanAnalysis_UI_Page.ts"
+    )
     e03 = _src("E03_StabSection/E03_StabSection_UI_Page.ts")
     assert "dirty: () => repPending > 0" in e03 and "repPending -= 1" in e03