diff --git a/Controller/Admin/ConfigController.php b/Controller/Admin/ConfigController.php
index 33f2872..6f0e976 100644
--- a/Controller/Admin/ConfigController.php
+++ b/Controller/Admin/ConfigController.php
@@ -1085,13 +1085,30 @@ protected function upsertAuthorityAndMember($em, $dir)
                             $insertValues[$col] = $data[$col] ?? 'member';
                             continue;
                         }
-                        // 4.0系のカラム名マッピング
-                        if ($col === 'work' && !array_key_exists($col, $data) && array_key_exists('work_id', $data)) {
-                            $insertValues[$col] = $data['work_id'];
+                        // 2.x系カラムマッピング (member_id → id, work → work_id, authority → authority_id, rank → sort_no)
+                        if ($col === 'id' && !array_key_exists('id', $data) && array_key_exists('member_id', $data)) {
+                            $insertValues[$col] = $data['member_id'];
                             continue;
                         }
-                        if ($col === 'authority' && !array_key_exists($col, $data) && array_key_exists('authority_id', $data)) {
-                            $insertValues[$col] = $data['authority_id'];
+                        if ($col === 'work_id' && !array_key_exists('work_id', $data) && array_key_exists('work', $data)) {
+                            $insertValues[$col] = (isset($data['del_flg']) && $data['del_flg'] == 1) ? 0 : $data['work'];
+                            continue;
+                        }
+                        if ($col === 'authority_id' && !array_key_exists('authority_id', $data) && array_key_exists('authority', $data)) {
+                            $insertValues[$col] = $data['authority'];
+                            continue;
+                        }
+                        if ($col === 'sort_no' && !array_key_exists('sort_no', $data) && array_key_exists('rank', $data)) {
+                            $insertValues[$col] = $data['rank'];
+                            continue;
+                        }
+                        // del_flg == 1 の場合 email をダミーに
+                        if ($col === 'email' && isset($data['del_flg']) && $data['del_flg'] == 1) {
+                            $insertValues[$col] = StringUtil::random(60) . '@dummy.dummy';
+                            continue;
+                        }
+                        if ($col === 'creator_id') {
+                            $insertValues[$col] = !empty($data[$col]) ? $data[$col] : 1;
                             continue;
                         }
                         if (array_key_exists($col, $data)) {
@@ -1121,6 +1138,7 @@ protected function upsertAuthorityAndMember($em, $dir)
                     if (array_key_exists('two_factor_auth_key', $insertValues) && $insertValues['two_factor_auth_key'] === null) {
                         $insertValues['two_factor_auth_key'] = null; // NULL許可（この行は冗長だが明示的に残す）
                     }
+                    $insertValues = $this->dataMigrationService->convertDataTypesForPostgreSQL($em, 'dtb_member', $insertValues);
                     $colsSql = implode(',', array_map(fn($c) => '"' . $c . '"', array_keys($insertValues)));
                     $placeholders = implode(',', array_fill(0, count($insertValues), '?'));
                     $updateSql = implode(', ', array_map(fn($c) => '"' . $c . '" = EXCLUDED."' . $c . '"', $updateCols));
@@ -1128,6 +1146,7 @@ protected function upsertAuthorityAndMember($em, $dir)
                     $em->prepare($sql)->executeStatement(array_values($insertValues));
                 }
                 fclose($handle);
+                $this->dataMigrationService->setIdSeq($em, 'dtb_member');
             }
             // メンバーIDキャッシュ
             try {
diff --git a/Tests/Fixtures/member_test.tar.gz b/Tests/Fixtures/member_test.tar.gz
index b2bbbd3..32748c6 100644
Binary files a/Tests/Fixtures/member_test.tar.gz and b/Tests/Fixtures/member_test.tar.gz differ
diff --git a/Tests/Web/Admin/ConfigControllerTest.php b/Tests/Web/Admin/ConfigControllerTest.php
index b8fe2f4..ffd7155 100644
--- a/Tests/Web/Admin/ConfigControllerTest.php
+++ b/Tests/Web/Admin/ConfigControllerTest.php
@@ -90,7 +90,14 @@ public function testバックアップファイルをアップロードできる
 
             if ($m > 0) {
                 $members = $this->entityManager->getRepository(\Eccube\Entity\Member::class)->findAll();
-                self::assertEquals($m, count($members), 'メンバーが正しくインポートされること');
+                self::assertGreaterThanOrEqual($m, count($members), 'メンバーが正しくインポートされること');
+                // 移行データ固有の値を検証
+                $conn = $this->entityManager->getConnection();
+                $testAdmin = $conn->fetchAssociative(
+                    'SELECT * FROM dtb_member WHERE id = ?', [99]
+                );
+                self::assertNotFalse($testAdmin, 'メンバーid=99が存在すること');
+                self::assertEquals('testadmin', $testAdmin['login_id']);
             }
 
             // ECCUBE_AUTH_MAGICの値を取得してアサート