diff --git a/src/main/extractor.ts b/src/main/extractor.ts
index 77b6609..86d7e0f 100644
--- a/src/main/extractor.ts
+++ b/src/main/extractor.ts
@@ -2907,9 +2907,16 @@ export async function extractPackageArchives(options: ExtractOptions): Promise<{
   let learnedPassword = cachedPackagePassword;
   let packageNeedsFlatMode = false;
   const extractedArchives = new Set<string>();
+  const skippedNonArchives = new Set<string>();
   const failedArchiveCategories = new Map<string, ExtractErrorCategory>();
   for (const archivePath of candidates) {
     if (resumeCompleted.has(archiveNameKey(path.basename(archivePath)))) {
+      const resumedName = path.basename(archivePath);
+      const resumedIsGenericSplit = /\.\d{3}$/i.test(resumedName) && !/\.(zip|7z)\.\d{3}$/i.test(resumedName);
+      if (resumedIsGenericSplit && !(await detectArchiveSignature(archivePath))) {
+        skippedNonArchives.add(pathSetKey(archivePath));
+        continue;
+      }
       extractedArchives.add(archivePath);
     }
   }
@@ -3026,7 +3033,7 @@ export async function extractPackageArchives(options: ExtractOptions): Promise<{
         logger.info(`Generische Split-Datei übersprungen (keine Archiv-Signatur): ${archiveName}`);
         extracted += 1;
         resumeCompleted.add(archiveResumeKey);
-        extractedArchives.add(archivePath);
+        skippedNonArchives.add(pathSetKey(archivePath));
         await writeExtractResumeState(options.packageDir, resumeCompleted, options.packageId);
         clearInterval(pulseTimer);
         archiveOutcome = "skipped";
@@ -3370,7 +3377,8 @@ export async function extractPackageArchives(options: ExtractOptions): Promise<{
       logger.error(`Entpacken ohne neue Ausgabe erkannt: ${options.targetDir}. Cleanup wird NICHT ausgeführt.`);
     } else {
       if (!options.skipPostCleanup) {
-        const cleanupSources = failed === 0 ? candidates : Array.from(extractedArchives.values());
+        const cleanupSources = (failed === 0 ? candidates : Array.from(extractedArchives.values()))
+          .filter((archivePath) => !skippedNonArchives.has(pathSetKey(archivePath)));
         const sourceAndTargetEqual = pathSetKey(path.resolve(options.packageDir)) === pathSetKey(path.resolve(options.targetDir));
         const removedArchives = sourceAndTargetEqual
           ? 0
diff --git a/tests/extractor.test.ts b/tests/extractor.test.ts
index 043d429..5e55e58 100644
--- a/tests/extractor.test.ts
+++ b/tests/extractor.test.ts
@@ -858,6 +858,40 @@ describe("extractor", () => {
       expect(targets.has(p003)).toBe(true);
       expect(targets.has(other)).toBe(false);
     });
+
+    it("does NOT delete a non-archive .00x family that sits beside a real archive (no-signature data-loss guard)", async () => {
+      const root = fs.mkdtempSync(path.join(os.tmpdir(), "rd-split-noarch-"));
+      tempDirs.push(root);
+      const packageDir = path.join(root, "pkg");
+      const targetDir = path.join(root, "out");
+      fs.mkdirSync(packageDir, { recursive: true });
+
+      const realZip = new AdmZip();
+      realZip.addFile("release.txt", Buffer.from("ok"));
+      realZip.writeZip(path.join(packageDir, "movie.zip"));
+
+      const d001 = path.join(packageDir, "mydata.001");
+      const d002 = path.join(packageDir, "mydata.002");
+      const d003 = path.join(packageDir, "mydata.003");
+      fs.writeFileSync(d001, "raw user split data, not an archive at all 0123456789", "utf8");
+      fs.writeFileSync(d002, "second raw chunk, also no archive magic bytes here", "utf8");
+      fs.writeFileSync(d003, "third raw chunk likewise plain content payload", "utf8");
+
+      const result = await extractPackageArchives({
+        packageDir,
+        targetDir,
+        cleanupMode: "delete",
+        conflictMode: "overwrite",
+        removeLinks: false,
+        removeSamples: false
+      });
+
+      expect(result.failed).toBe(0);
+      expect(fs.existsSync(path.join(targetDir, "release.txt"))).toBe(true);
+      expect(fs.existsSync(d001)).toBe(true);
+      expect(fs.existsSync(d002)).toBe(true);
+      expect(fs.existsSync(d003)).toBe(true);
+    });
   });
 
   describe("detectArchiveSignature", () => {