diff --git a/frontend/components/dataflow/DataFlowDesigner.tsx b/frontend/components/dataflow/DataFlowDesigner.tsx
index 421446b8..6561b65d 100644
--- a/frontend/components/dataflow/DataFlowDesigner.tsx
+++ b/frontend/components/dataflow/DataFlowDesigner.tsx
@@ -110,7 +110,6 @@ export const DataFlowDesigner: React.FC<DataFlowDesignerProps> = ({
                 toColumns: Array.isArray(rel.toColumns) ? rel.toColumns : [],
                 connectionType: rel.connectionType || "simple-key",
                 relationshipName: rel.relationshipName || "",
-                settings: rel.settings || {},
               }));
 
               setTempRelationships(loadedRelationships);
@@ -601,7 +600,7 @@ export const DataFlowDesigner: React.FC<DataFlowDesignerProps> = ({
         // 연결된 테이블 목록 추출
         const tableNames = extractTableNames(nodes);
 
-        // 관계 데이터를 JsonRelationship 형태로 변환
+        // 관계 데이터를 JsonRelationship 형태로 변환 (settings 제거 - relationships는 순수 연결 정보만)
         const jsonRelationships: JsonRelationship[] = tempRelationships.map((rel) => ({
           id: rel.id,
           relationshipName: rel.relationshipName, // 🔥 핵심: 관계 이름 포함
@@ -610,7 +609,6 @@ export const DataFlowDesigner: React.FC<DataFlowDesignerProps> = ({
           fromColumns: rel.fromColumns,
           toColumns: rel.toColumns,
           connectionType: rel.connectionType,
-          settings: rel.settings,
         }));
 
         // 저장 요청 데이터 구성
@@ -640,14 +638,27 @@ export const DataFlowDesigner: React.FC<DataFlowDesignerProps> = ({
                     : undefined,
               })),
             })),
-          // 데이터 저장 액션이 있는 경우 추가
+          // 데이터 저장 액션이 있는 경우 추가 (transformFunction 제거)
           plan: tempRelationships
             .filter((rel) => rel.settings?.actions && Array.isArray(rel.settings.actions))
             .map((rel) => ({
               id: rel.id,
               sourceTable: rel.fromTable,
-              actions: rel.settings?.actions || [],
-            })),
+              actions: (rel.settings?.actions || []).map((action: Record<string, unknown>) => ({
+                id: action.id as string,
+                name: action.name as string,
+                actionType: action.actionType as "insert" | "update" | "delete" | "upsert",
+                fieldMappings: ((action.fieldMappings as Record<string, unknown>[]) || []).map(
+                  (mapping: Record<string, unknown>) => {
+                    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+                    const { transformFunction, ...cleanMapping } = mapping;
+                    return cleanMapping as any; // transformFunction 제거 후 타입 캐스팅
+                  },
+                ),
+                splitConfig: action.splitConfig,
+                conditions: action.conditions,
+              })),
+            })) as any, // plan 전체를 any로 캐스팅
         };
 
         if (diagramId && diagramId > 0) {
diff --git a/frontend/lib/api/dataflow.ts b/frontend/lib/api/dataflow.ts
index a3ec592c..68585900 100644
--- a/frontend/lib/api/dataflow.ts
+++ b/frontend/lib/api/dataflow.ts
@@ -260,7 +260,7 @@ export interface JsonRelationship {
   fromColumns: string[];
   toColumns: string[];
   connectionType: "simple-key" | "data-save" | "external-call";
-  settings?: Record<string, unknown>;
+  // settings 제거 - relationships는 순수 연결 정보만 저장
 }
 
 export interface CreateDiagramRequest {
@@ -692,7 +692,6 @@ export class DataFlowAPI {
         to_column_name: rel.toColumns.join(","),
         connection_type: rel.connectionType || "simple-key", // 각 관계의 connectionType 사용
         company_code: companyCode, // 실제 사용자 회사 코드 사용
-        settings: rel.settings || {},
         created_at: jsonDiagram.created_at,
         updated_at: jsonDiagram.updated_at,
         created_by: jsonDiagram.created_by,