diff --git a/backend/routes/isic.js b/backend/routes/isic.js
index b43aadc..45f87b1 100644
--- a/backend/routes/isic.js
+++ b/backend/routes/isic.js
@@ -2,8 +2,6 @@ const express = require('express');
 const router = express.Router();
 const db = require('../db');
 const logger = require('../utils/logger'); // Если используете логгер
-const fs = require('fs');
-const csv = require('csv-parser');
 
 /**
  * @swagger
@@ -76,47 +74,8 @@ router.get('/codes', async (req, res) => {
   const offset = (page - 1) * limit;
   const { lang } = req.query;
 
-  // Если запрошен русский язык — отдаём из CSV
-  if (lang === 'ru') {
-    const { level, parent_code } = req.query;
-    const results = [];
-    fs.createReadStream(__dirname + '/../db/data/isic_titles_ru.csv')
-      .pipe(csv())
-      .on('data', (data) => {
-        let pass = true;
-        // Фильтрация по уровню (по длине кода)
-        if (level) {
-          if (level == 1 && data.code.length !== 1) pass = false;
-          if (level == 2 && data.code.length !== 2) pass = false;
-          if (level == 3 && data.code.length !== 3) pass = false;
-          if (level == 4 && data.code.length !== 4) pass = false;
-        }
-        // Фильтрация по parent_code
-        if (parent_code && pass) {
-          if (level == 2 && !data.code.startsWith(parent_code)) pass = false;
-          if (level == 3 && !data.code.startsWith(parent_code)) pass = false;
-          if (level == 4 && !data.code.startsWith(parent_code)) pass = false;
-        }
-        if (pass) {
-          results.push({
-            code: data.code,
-            description: data.title,
-          });
-        }
-      })
-      .on('end', () => {
-        res.json({
-          totalItems: results.length,
-          codes: results,
-          totalPages: 1,
-          currentPage: 1,
-        });
-      })
-      .on('error', (err) => {
-        res.status(500).json({ error: 'Ошибка чтения русских кодов ISIC', details: err.message });
-      });
-    return;
-  }
+  // Убираем русский вариант и всегда используем базу данных PostgreSQL
+  // if (lang === 'ru') { ... } - удалено
 
   const baseQuerySelect = `
     SELECT c.code, c.description, c.code_level, c.explanatory_note_inclusion, c.explanatory_note_exclusion,
diff --git a/frontend/src/views/settings/BlockchainSettingsView.vue b/frontend/src/views/settings/BlockchainSettingsView.vue
index f0dd90d..786a3af 100644
--- a/frontend/src/views/settings/BlockchainSettingsView.vue
+++ b/frontend/src/views/settings/BlockchainSettingsView.vue
@@ -452,7 +452,7 @@ const fetchIsicCodes = async (params = {}, optionsRef, loadingRef) => {
   loadingRef.value = true;
   optionsRef.value = []; // Очищаем перед загрузкой
   try {
-    const queryParams = new URLSearchParams({ ...params, lang: 'ru' }).toString();
+    const queryParams = new URLSearchParams(params).toString();
     console.debug(`[BlockchainSettingsView] Fetching ISIC codes with params: ${queryParams}`);
     
     // Убедитесь, что базовый URL настроен правильно (например, через axios interceptors или .env)
@@ -464,7 +464,8 @@ const fetchIsicCodes = async (params = {}, optionsRef, loadingRef) => {
            // Отображаем код и описание для ясности
            text: `${code.code} - ${code.description}` 
        }));
-       console.debug(`[BlockchainSettingsView] Loaded ISIC codes for level ${params.level || ('parent: '+params.parent_code)}, count:`, optionsRef.value.length);
+       console.log(`[BlockchainSettingsView] Loaded ISIC codes for level ${params.level || ('parent: '+params.parent_code)}, count:`, optionsRef.value.length);
+       console.log('[BlockchainSettingsView] Response data:', response.data);
     } else {
         console.error('[BlockchainSettingsView] Invalid response structure for ISIC codes:', response.data);
     }
@@ -513,6 +514,7 @@ const updateCurrentIsicSelection = () => {
 
 // --- Наблюдатели для каскадной загрузки и обновления текущего выбора --- 
 watch(selectedSection, (newVal) => {
+  console.log('[BlockchainSettingsView] selectedSection changed to:', newVal);
   selectedDivision.value = ''; divisionOptions.value = [];
   selectedGroup.value = ''; groupOptions.value = [];
   selectedClass.value = ''; classOptions.value = [];
@@ -523,6 +525,7 @@ watch(selectedSection, (newVal) => {
 });
 
 watch(selectedDivision, (newVal) => {
+  console.log('[BlockchainSettingsView] selectedDivision changed to:', newVal);
   selectedGroup.value = ''; groupOptions.value = [];
   selectedClass.value = ''; classOptions.value = [];
   if (newVal) {
@@ -532,6 +535,7 @@ watch(selectedDivision, (newVal) => {
 });
 
 watch(selectedGroup, (newVal) => {
+  console.log('[BlockchainSettingsView] selectedGroup changed to:', newVal);
   selectedClass.value = ''; classOptions.value = [];
   if (newVal) {
     fetchIsicCodes({ parent_code: newVal }, classOptions, isLoadingClasses);