diff --git a/frontend/src/pages/index/BackupModal.tsx b/frontend/src/pages/index/BackupModal.tsx
index b0f62bf2d..a77478923 100644
--- a/frontend/src/pages/index/BackupModal.tsx
+++ b/frontend/src/pages/index/BackupModal.tsx
@@ -59,14 +59,10 @@ export default function BackupModal({
         return;
       }
 
+      // importDB schedules the panel restart server-side; wait it out, then reload.
       onBusy({ busy: true, tip: `${t('pages.settings.restartPanel')}…` });
-      const restart = await HttpUtil.post('/panel/api/setting/restartPanel');
-      if (restart?.success) {
-        await PromiseUtil.sleep(5000);
-        window.location.reload();
-      } else {
-        onBusy({ busy: false });
-      }
+      await PromiseUtil.sleep(5000);
+      window.location.reload();
     });
     fileInput.click();
   }
diff --git a/internal/web/controller/import_db_restart_test.go b/internal/web/controller/import_db_restart_test.go
new file mode 100644
index 000000000..9b9392797
--- /dev/null
+++ b/internal/web/controller/import_db_restart_test.go
@@ -0,0 +1,91 @@
+package controller
+
+import (
+	"bytes"
+	"encoding/json"
+	"mime/multipart"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+	"time"
+
+	"github.com/mhsanaei/3x-ui/v3/internal/database"
+	"github.com/mhsanaei/3x-ui/v3/internal/web/global"
+	"github.com/mhsanaei/3x-ui/v3/internal/xray"
+
+	"github.com/gin-gonic/gin"
+)
+
+// A successful import must schedule the panel restart itself: the browser's
+// restartPanel follow-up can 401 once the imported users table lands (#6446).
+func TestImportDBSchedulesPanelRestart(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("the stub xray binary is a shell script")
+	}
+	uploadPath := filepath.Join(t.TempDir(), "x-ui.db")
+	if err := database.InitDB(uploadPath); err != nil {
+		t.Fatalf("InitDB(upload): %v", err)
+	}
+	if err := database.CloseDB(); err != nil {
+		t.Fatalf("CloseDB(upload): %v", err)
+	}
+	upload, err := os.ReadFile(uploadPath)
+	if err != nil {
+		t.Fatalf("read upload: %v", err)
+	}
+
+	newHostTestDB(t)
+	binDir := t.TempDir()
+	t.Setenv("XUI_BIN_FOLDER", binDir)
+	t.Setenv("XUI_LOG_FOLDER", t.TempDir())
+	if err := os.WriteFile(filepath.Join(binDir, xray.GetBinaryName()), []byte("#!/bin/sh\nexit 0\n"), 0o755); err != nil {
+		t.Fatalf("write stub xray: %v", err)
+	}
+
+	restarts := make(chan struct{}, 1)
+	global.SetRestartHook(func() {
+		select {
+		case restarts <- struct{}{}:
+		default:
+		}
+	})
+	t.Cleanup(func() { global.SetRestartHook(func() {}) })
+
+	var body bytes.Buffer
+	mw := multipart.NewWriter(&body)
+	part, err := mw.CreateFormFile("db", "x-ui.db")
+	if err != nil {
+		t.Fatalf("CreateFormFile: %v", err)
+	}
+	if _, err := part.Write(upload); err != nil {
+		t.Fatalf("write part: %v", err)
+	}
+	if err := mw.Close(); err != nil {
+		t.Fatalf("close multipart: %v", err)
+	}
+
+	a := &ServerController{}
+	engine := gin.New()
+	engine.POST("/panel/api/server/importDB", a.importDB)
+	req := httptest.NewRequest(http.MethodPost, "/panel/api/server/importDB", &body)
+	req.Header.Set("Content-Type", mw.FormDataContentType())
+	w := httptest.NewRecorder()
+	engine.ServeHTTP(w, req)
+
+	var env hostEnvelope
+	if err := json.Unmarshal(w.Body.Bytes(), &env); err != nil {
+		t.Fatalf("decode envelope: %v body=%s", err, w.Body.String())
+	}
+	if !env.Success {
+		t.Fatalf("importDB failed: %s", env.Msg)
+	}
+
+	select {
+	case <-restarts:
+	case <-time.After(6 * time.Second):
+		t.Fatal("importDB succeeded but no panel restart was scheduled within 6s")
+	}
+}
diff --git a/internal/web/controller/server.go b/internal/web/controller/server.go
index 581fb71f2..22e029936 100644
--- a/internal/web/controller/server.go
+++ b/internal/web/controller/server.go
@@ -391,6 +391,9 @@ func (a *ServerController) importDB(c *gin.Context) {
 		jsonMsg(c, I18nWeb(c, "pages.index.importDatabaseError"), err)
 		return
 	}
+	// Startup-registered routes (subPath) must match the restored DB, and the
+	// browser's restartPanel follow-up can 401 once the imported users land (#6446).
+	_ = a.panelService.RestartPanel(3 * time.Second)
 	jsonObj(c, I18nWeb(c, "pages.index.importDatabaseSuccess"), nil)
 }