diff --git a/tests/Feature/AdminPlatformOrderIndexQuickFiltersUnpaidAndPendingEffectiveShouldPreserveContextTest.php b/tests/Feature/AdminPlatformOrderIndexQuickFiltersUnpaidAndPendingEffectiveShouldPreserveContextTest.php
new file mode 100644
index 0000000..7f2edc0
--- /dev/null
+++ b/tests/Feature/AdminPlatformOrderIndexQuickFiltersUnpaidAndPendingEffectiveShouldPreserveContextTest.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class AdminPlatformOrderIndexQuickFiltersUnpaidAndPendingEffectiveShouldPreserveContextTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected function loginAsPlatformAdmin(): void
+    {
+        $this->seed();
+
+        $this->post('/admin/login', [
+            'email' => 'platform.admin@demo.local',
+            'password' => 'Platform@123456',
+        ])->assertRedirect('/admin');
+    }
+
+    public function test_unpaid_and_pending_effective_quick_filters_should_preserve_context_and_clear_toggles(): void
+    {
+        $this->loginAsPlatformAdmin();
+
+        $res = $this->get('/admin/platform-orders?merchant_id=1'
+            . '&created_from=2026-03-01&created_to=2026-03-18'
+            . '&page=2'
+            . '&bmpa_failed_only=1&bmpa_error_keyword=timeout&fail_only=1'
+            . '&back=/admin'
+        );
+        $res->assertOk();
+
+        $html = (string) $res->getContent();
+
+        // 1) 待支付
+        $this->assertMatchesRegularExpression('/<a[^>]*data-role="po-quickfilter-unpaid"[^>]*href="([^"]+)"/u', $html);
+        preg_match('/<a[^>]*data-role="po-quickfilter-unpaid"[^>]*href="([^"]+)"/u', $html, $m1);
+        $href1 = html_entity_decode($m1[1] ?? '');
+        $query1 = parse_url($href1, PHP_URL_QUERY) ?: '';
+        parse_str($query1, $q1);
+
+        $this->assertSame('unpaid', (string) ($q1['payment_status'] ?? ''));
+
+        $this->assertSame('1', (string) ($q1['merchant_id'] ?? ''));
+        $this->assertSame('2026-03-01', (string) ($q1['created_from'] ?? ''));
+        $this->assertSame('2026-03-18', (string) ($q1['created_to'] ?? ''));
+        $this->assertSame('/admin', (string) ($q1['back'] ?? ''));
+
+        $this->assertArrayNotHasKey('page', $q1);
+        $this->assertArrayNotHasKey('bmpa_failed_only', $q1);
+        $this->assertArrayNotHasKey('bmpa_error_keyword', $q1);
+        $this->assertArrayNotHasKey('fail_only', $q1);
+
+        // 2) 待生效
+        $this->assertMatchesRegularExpression('/<a[^>]*data-role="po-quickfilter-pending-effective"[^>]*href="([^"]+)"/u', $html);
+        preg_match('/<a[^>]*data-role="po-quickfilter-pending-effective"[^>]*href="([^"]+)"/u', $html, $m2);
+        $href2 = html_entity_decode($m2[1] ?? '');
+        $query2 = parse_url($href2, PHP_URL_QUERY) ?: '';
+        parse_str($query2, $q2);
+
+        $this->assertSame('paid', (string) ($q2['payment_status'] ?? ''));
+        $this->assertSame('pending', (string) ($q2['status'] ?? ''));
+        $this->assertSame('unsynced', (string) ($q2['sync_status'] ?? ''));
+
+        $this->assertSame('1', (string) ($q2['merchant_id'] ?? ''));
+        $this->assertSame('2026-03-01', (string) ($q2['created_from'] ?? ''));
+        $this->assertSame('2026-03-18', (string) ($q2['created_to'] ?? ''));
+        $this->assertSame('/admin', (string) ($q2['back'] ?? ''));
+
+        $this->assertArrayNotHasKey('page', $q2);
+        $this->assertArrayNotHasKey('bmpa_failed_only', $q2);
+        $this->assertArrayNotHasKey('bmpa_error_keyword', $q2);
+        $this->assertArrayNotHasKey('fail_only', $q2);
+    }
+}