diff --git a/README.md b/README.md
index 5ea0a00..ab5ce2d 100644
--- a/README.md
+++ b/README.md
@@ -172,7 +172,7 @@ The JSON API is session-authenticated unless noted:
 - `POST /api/telegram-link/unlink`
 - `POST /api/vpn-clients`
 - `POST /api/vpn-clients/{id}/enabled`
-- `POST /api/vpn-clients/{id}/group` changes the group and rotates the client key pair
+- `POST /api/vpn-clients/{id}/group` changes the server-side connectivity group without changing the client config
 - `DELETE /api/vpn-clients/{id}`
 - `GET /api/vpn-clients/{id}/config` returns `servers[]` with one raw AWG config and one Amnezia `vpn://` import link per registered endpoint
 - `POST /api/vpn-clients/sync`
diff --git a/src/api/mod.rs b/src/api/mod.rs
index c6fa0a2..102ba3a 100644
--- a/src/api/mod.rs
+++ b/src/api/mod.rs
@@ -533,10 +533,7 @@ async fn set_vpn_client_group_handler(
         return Ok(json_error(cot::http::StatusCode::NOT_FOUND, "not found"));
     };
 
-    if let Err(e) = client
-        .set_group_and_rotate_keys(&db, request.group_name.as_deref())
-        .await
-    {
+    if let Err(e) = client.set_group(&db, request.group_name.as_deref()).await {
         return Ok(json_error_typed(
             cot::http::StatusCode::BAD_REQUEST,
             "client_group_update_failed",
diff --git a/src/i18n/phrases.rs b/src/i18n/phrases.rs
index b613435..6541c73 100644
--- a/src/i18n/phrases.rs
+++ b/src/i18n/phrases.rs
@@ -148,9 +148,7 @@ translations! {
     configs_group_placeholder: "Leave empty for isolation"  , "Оставьте пустым для изоляции";
     configs_group_hint:       "Clients with the same group name can connect to each other on the same VPN server." , "Клиенты с одинаковой группой могут обращаться друг к другу на одном VPN-сервере.";
     configs_change_group:     "Change group"                , "Сменить группу";
-    configs_group_rotation_warning: "Changing the group rotates this client's keys. The old config will stop working; download or import a new one." , "При смене группы ключи клиента будут заменены. Старый конфиг перестанет работать — скачайте или импортируйте новый.";
-    configs_group_rotation_confirm: "Change the group and invalidate the old client config?" , "Сменить группу и сделать старый конфиг клиента недействительным?";
-    configs_group_changed:    "Group changed. Update the client config." , "Группа изменена. Обновите конфиг клиента.";
+    configs_group_changed:    "Group changed. The existing client config remains valid." , "Группа изменена. Текущий конфиг клиента остаётся действительным.";
     configs_empty_title:      "Create your first key"       , "Создайте первый ключ";
     configs_empty_hint:       "It will appear here after creation." , "После создания он появится здесь.";
     configs_enabled_state:    "active"                      , "активен";
diff --git a/src/vpn.rs b/src/vpn.rs
index 0a10ec2..5250502 100644
--- a/src/vpn.rs
+++ b/src/vpn.rs
@@ -122,7 +122,7 @@ impl VpnClient {
         self.save(db).await
     }
 
-    pub async fn set_group_and_rotate_keys(
+    pub async fn set_group(
         &mut self,
         db: &Database,
         group_name: Option<&str>,
@@ -132,9 +132,6 @@ impl VpnClient {
             return Ok(());
         }
 
-        let keypair = generate_keypair().map_err(db_custom_error)?;
-        self.public_key = LimitedString::new(keypair.public_key).unwrap();
-        self.private_key = LimitedString::new(keypair.private_key).unwrap();
         self.group_name = group_name;
         let now = now_timestamp();
         self.updated_at = LimitedString::new(now).unwrap();
diff --git a/templates/client_portal.html b/templates/client_portal.html
index 6878058..6b2a02f 100644
--- a/templates/client_portal.html
+++ b/templates/client_portal.html
@@ -118,7 +118,6 @@
     .telegram-copy { color: #53616c; line-height: 1.45; margin: 0; }
     .form-stack { display: grid; gap: .8rem; }
     .field-hint { margin: 0; color: #69777f; font-size: .82rem; line-height: 1.4; }
-    .warning-box { border: 1px solid #e5c76c; border-radius: 8px; background: #fff8df; color: #5f4911; padding: .7rem; font-size: .86rem; line-height: 1.4; }
     .guide-list { margin: 0; padding-left: 1.2rem; color: #34424b; display: grid; gap: .45rem; line-height: 1.4; }
     .guide-list a { color: #18342f; font-weight: 850; }
     .guide-list a.disabled { color: #69777f; pointer-events: none; text-decoration: none; }
@@ -312,9 +311,6 @@
                         </datalist>
                         <p class="field-hint">{{ t.configs_group_hint }}</p>
                     </div>
-                    <template x-if="clientModal.mode === 'group'">
-                        <div class="warning-box">{{ t.configs_group_rotation_warning }}</div>
-                    </template>
                 </div>
                 <div class="modal-actions">
                     <button type="button" class="secondary" @click="closeClientModal()">{{ t.admin_close }}</button>
@@ -777,8 +773,6 @@ function clientPortal() {
                 this.clientModal = null;
                 return;
             }
-            if (!confirm('{{ t.configs_group_rotation_confirm }}')) return;
-
             this.clearNotice();
             this.busy = true;
             try {
diff --git a/templates/configs.html b/templates/configs.html
index caed61c..e05279f 100644
--- a/templates/configs.html
+++ b/templates/configs.html
@@ -364,11 +364,6 @@
                         </datalist>
                     </div>
                 </div>
-                <template x-if="clientModal.mode === 'group'">
-                    <div class="notice tone-warning">
-                        <span>{{ t.configs_group_rotation_warning }}</span>
-                    </div>
-                </template>
                 <div class="modal-actions">
                     <button class="secondary" @click="closeClientModal()">{{ t.admin_close }}</button>
                     <button @click="clientModal.mode === 'create' ? createClient() : changeClientGroup()" :disabled="busy">{{ t.settings_save }}</button>
@@ -842,8 +837,6 @@ function configsPage() {
                 this.clientModal = null;
                 return;
             }
-            if (!confirm('{{ t.configs_group_rotation_confirm }}')) return;
-
             this.clearNotice();
             this.busy = true;
             try {