diff --git a/package.json b/package.json
index e8eae87..47bbd35 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ipwhitelist",
-  "version": "0.5.123",
+  "version": "0.5.125",
   "description": "IP WhiteList microservice for cloud provider",
   "main": "server.js",
   "scripts": {
diff --git a/v2/src/config/index.js b/v2/src/config/index.js
index d553ccc..e6b4312 100644
--- a/v2/src/config/index.js
+++ b/v2/src/config/index.js
@@ -9,7 +9,7 @@
 // ═══════════════════════════════════════════════════════════════════════════════
 
 module.exports = {
-  version: '0.5.123',
+  version: '0.5.125',
 
   // ── IAM ──────────────────────────────────────────────────────────────────
   iamUrl: process.env.V2_IAM_URL || 'https://auth-api.ngcloud.ru/api/v1/auth/user',
diff --git a/v2/src/impersonation/index.js b/v2/src/impersonation/index.js
index 02cb3d0..3d8cda6 100644
--- a/v2/src/impersonation/index.js
+++ b/v2/src/impersonation/index.js
@@ -26,9 +26,24 @@ function enhanceImpersonation(req, res, next) {
   const u = req.session && req.session.user;
   if (!u) return next();
 
+  console.log('[v2:impersonation] enter', {
+    sessionID: req.sessionID,
+    email: u.email,
+    activeClientId: u.activeClientId,
+    clientId: u.clientId,
+    isImpersonated: u.isImpersonated,
+    originalUserEmail: u.originalUserEmail,
+    path: req.originalUrl,
+  });
+
   // ── IAM-имперсонация (уже есть в сессии) — просто добавляем компании ──
   if (u.isImpersonated && u.originalUserEmail === ORIGINAL_EMAIL) {
     addExtraCompanies(u);
+    console.log('[v2:impersonation] addExtraCompanies', {
+      sessionID: req.sessionID,
+      activeClientId: u.activeClientId,
+      allClientIds: u.allClientIds,
+    });
     return next();
   }
 
@@ -56,6 +71,14 @@ function enhanceImpersonation(req, res, next) {
       is_active_profile: cid === MAIN_COMPANY,
     }));
 
+    console.log('[v2:impersonation] applied test impersonation', {
+      sessionID: req.sessionID,
+      activeClientId: u.activeClientId,
+      clientId: u.clientId,
+      originalUserEmail: u.originalUserEmail,
+      allClientIds: u.allClientIds,
+    });
+
     return next();
   }
 
diff --git a/v2/src/router/index.js b/v2/src/router/index.js
index 0864fd6..0a863d6 100644
--- a/v2/src/router/index.js
+++ b/v2/src/router/index.js
@@ -29,6 +29,15 @@
 function resolveContext(req, res, next) {
   const u = req.session && req.session.user;
 
+  console.log('[v2:resolveContext] enter', {
+    sessionID: req.sessionID,
+    hasSession: !!req.session,
+    hasUser: !!u,
+    sessionActiveClientId: u ? u.activeClientId : null,
+    sessionClientId: u ? u.clientId : null,
+    url: req.originalUrl,
+  });
+
   // Нет сессии — нет доступа
   if (!u) return res.redirect('/v2/login');
 
@@ -53,6 +62,14 @@ function resolveContext(req, res, next) {
   req.allClientIds     = allCids;
   req.profiles         = u.profiles || [];
 
+  console.log('[v2:resolveContext] exit', {
+    sessionID: req.sessionID,
+    reqClientId: req.clientId,
+    reqEmail: req.email,
+    canAdmin: req.canAdmin,
+    isImpersonated: req.isImpersonated,
+  });
+
   next();
 }
 
diff --git a/v2/src/user/index.js b/v2/src/user/index.js
index 420c935..e7f2fec 100644
--- a/v2/src/user/index.js
+++ b/v2/src/user/index.js
@@ -54,9 +54,23 @@ function createUserRouter() {
         const targetId = req.query.switchTo;
         const allowed = isAdmin || (req.profiles || []).find(p => p.client_id === targetId);
         if (allowed) {
+          console.log('[v2:switchTo] before save', {
+            sessionID: req.sessionID,
+            oldActiveClientId: req.session && req.session.user ? req.session.user.activeClientId : null,
+            oldClientId: req.session && req.session.user ? req.session.user.clientId : null,
+            targetId,
+            email: req.email,
+          });
           req.session.user.activeClientId = targetId;
           return req.session.save(err => {
-            if (err) console.error('[switchTo] save error:', err.message);
+            if (err) {
+              console.error('[v2:switchTo] save error:', err.message);
+            } else {
+              console.log('[v2:switchTo] after save', {
+                sessionID: req.sessionID,
+                savedActiveClientId: req.session && req.session.user ? req.session.user.activeClientId : null,
+              });
+            }
             res.redirect('/v2/app');
           });
         }
@@ -83,6 +97,10 @@ function createUserRouter() {
         entries, limit, used,
         companies,
         activeClientId: clId,
+        debugClientId: clId,
+        sessionId: req.sessionID || '',
+        sessionActiveClientId: req.session && req.session.user ? (req.session.user.activeClientId || '') : '',
+        sessionClientId: req.session && req.session.user ? (req.session.user.clientId || '') : '',
         user: templateUser,
         includeDeleted,
         version: config.version,
diff --git a/views/v2/user.ejs b/views/v2/user.ejs
index f3f59ae..01fde4d 100644
--- a/views/v2/user.ejs
+++ b/views/v2/user.ejs
@@ -129,6 +129,16 @@
     if(p.get('error')){document.write('<div class="alert alert-err">'+p.get('error')+'</div>');history.replaceState(null,'','/v2/app');}
   </script>
 
+  <div class="card" style="margin-bottom:1rem;border-style:dashed;">
+    <div class="card-body" style="font-size:.85rem;color:var(--muted);">
+      <div><strong>DEBUG</strong></div>
+      <div>sessionID: <%= (typeof sessionId !== 'undefined' && sessionId) ? sessionId : 'n/a' %></div>
+      <div>session.activeClientId: <%= (typeof sessionActiveClientId !== 'undefined' && sessionActiveClientId) ? sessionActiveClientId : 'n/a' %></div>
+      <div>req.clientId: <%= (typeof debugClientId !== 'undefined' && debugClientId) ? debugClientId : activeClientId %></div>
+      <div>req.session.user.clientId: <%= (typeof sessionClientId !== 'undefined' && sessionClientId) ? sessionClientId : 'n/a' %></div>
+    </div>
+  </div>
+
   <% if (user.isImpersonated) { %>
     <div class="alert alert-warn">
       ⚠️ Режим имперсонации — данные сохраняются от имени <strong><%= activeClientId %></strong>