diff --git a/services/api/src/uploads/uploads.service.ts b/services/api/src/uploads/uploads.service.ts
index dc72c80..ca1b8d3 100644
--- a/services/api/src/uploads/uploads.service.ts
+++ b/services/api/src/uploads/uploads.service.ts
@@ -594,8 +594,8 @@ export class UploadsService {
     const earliest = new Map<number, Date>();
     for (const row of rows) {
       // bytes>0 的行只会经 complete 落定（同事务写 uploadedAt）；null 仅理论
-      // 形状（直改库等），跳过不参与映射——谓词命中与否不受影响（uploadedAt
-      // 只是回显元数据）。
+      // 形状（直改库等，bytes>0 且 uploadedAt=null），跳过不参与映射——该形状
+      // 下预检可能漏报而 init 仍会 409（偏差仅限于此理论形状，正常写路径不可达）。
       if (row.uploadedAt === null) {
         continue;
       }
diff --git a/services/api/test/uploads.e2e-spec.ts b/services/api/test/uploads.e2e-spec.ts
index 39757fb..31ae24a 100644
--- a/services/api/test/uploads.e2e-spec.ts
+++ b/services/api/test/uploads.e2e-spec.ts
@@ -1117,6 +1117,46 @@ describe('uploads duplicates check (e2e)', () => {
     expect(res.body.duplicates).toEqual([]);
   });
 
+  it('同 bytes 多条可见命中取最早 uploadedAt（force 允许的重复行）', async () => {
+    const bytes = 555_555;
+    await seedPhoto(memberAId, bytes, {
+      uploadedAt: new Date('2026-09-25T08:00:00.000Z'),
+    });
+    await seedPhoto(memberAId, bytes, {
+      uploadedAt: new Date('2026-09-10T08:00:00.000Z'), // 更早，应回显此值
+    });
+    const res = await check(memberAToken, {
+      albumId,
+      items: [item('e.jpg', bytes)],
+    });
+    expect(res.status).toBe(200);
+    expect(res.body.duplicates).toEqual([
+      { index: 0, bytes, uploadedAt: '2026-09-10T08:00:00.000Z' },
+    ]);
+  });
+
+  it('uploadEnabled=false：预检仍 200 且照常命中（只读预览刻意不校验开关；init 入队时仍 409 兜底）', async () => {
+    await prisma.albums.update({
+      where: { id: albumId },
+      data: { uploadEnabled: false },
+    });
+    try {
+      const res = await check(memberAToken, {
+        albumId,
+        items: [item('a.jpg', BYTES_A)],
+      });
+      expect(res.status).toBe(200);
+      expect(res.body.duplicates).toEqual([
+        { index: 0, bytes: BYTES_A, uploadedAt: UPLOADED_AT_A },
+      ]);
+    } finally {
+      await prisma.albums.update({
+        where: { id: albumId },
+        data: { uploadEnabled: true },
+      });
+    }
+  });
+
   it('非成员 → 404 ALBUM_NOT_FOUND（防枚举，同 init）', async () => {
     const res = await check(outsiderToken, {
       albumId,