diff --git a/src/danog/MadelineProto/MTProto.php b/src/danog/MadelineProto/MTProto.php
index a3be84e59..c31ade478 100644
--- a/src/danog/MadelineProto/MTProto.php
+++ b/src/danog/MadelineProto/MTProto.php
@@ -679,9 +679,10 @@ class MTProto extends \Volatile
             \danog\MadelineProto\Logger::log(['Copying authorization from dc '.$authorized_dc.' to dc '.$new_dc.'...'], Logger::VERBOSE);
             $exported_authorization = $this->method_call('auth.exportAuthorization', ['dc_id' => $new_dc], ['datacenter' => $authorized_dc]);
             $this->method_call('auth.logOut', [], ['datacenter' => $new_dc]);
-            $this->method_call('auth.importAuthorization', $exported_authorization, ['datacenter' => $new_dc]);
+            $authorization = $this->method_call('auth.importAuthorization', $exported_authorization, ['datacenter' => $new_dc]);
         }
         $this->updates_state['sync_loading'] = false;
+        return $authorization;
     }
 
     public function write_client_info($method, $arguments = [], $options = [])
diff --git a/src/danog/MadelineProto/Wrappers/Login.php b/src/danog/MadelineProto/Wrappers/Login.php
index aa9bc89b3..be15d7d21 100644
--- a/src/danog/MadelineProto/Wrappers/Login.php
+++ b/src/danog/MadelineProto/Wrappers/Login.php
@@ -37,7 +37,7 @@ trait Login
 
     public function bot_login($token)
     {
-        if ($this->authorized) {
+        if ($this->authorized === self::LOGGED_IN) {
             \danog\MadelineProto\Logger::log(['This instance of MadelineProto is already logged in. Logging out first...'], \danog\MadelineProto\Logger::NOTICE);
             $this->logout();
         }
@@ -64,7 +64,7 @@ trait Login
 
     public function phone_login($number, $sms_type = 5)
     {
-        if ($this->authorized) {
+        if ($this->authorized === self::LOGGED_IN) {
             \danog\MadelineProto\Logger::log(['This instance of MadelineProto is already logged in. Logging out first...'], \danog\MadelineProto\Logger::NOTICE);
             $this->logout();
         }
@@ -132,6 +132,36 @@ trait Login
 
         return $this->authorization;
     }
+    public function import_authorization($authorization)
+    {
+        if ($this->authorized === self::LOGGED_IN) {
+            \danog\MadelineProto\Logger::log(['This instance of MadelineProto is already logged in. Logging out first...'], \danog\MadelineProto\Logger::NOTICE);
+            $this->logout();
+        }
+        \danog\MadelineProto\Logger::log(['Logging in using auth key...'], \danog\MadelineProto\Logger::NOTICE);
+        list($dc_id, $auth_key) = $authorization;
+        $this->datacenter->sockets[$dc_id]->session_id = $this->random(8);
+        $this->datacenter->sockets[$dc_id]->session_in_seq_no = 0;
+        $this->datacenter->sockets[$dc_id]->session_out_seq_no = 0;
+        $this->datacenter->sockets[$dc_id]->auth_key = $auth_key;
+        $this->datacenter->sockets[$dc_id]->temp_auth_key = null;
+        $this->datacenter->sockets[$dc_id]->incoming_messages = [];
+        $this->datacenter->sockets[$dc_id]->outgoing_messages = [];
+        $this->datacenter->sockets[$dc_id]->new_outgoing = [];
+        $this->datacenter->sockets[$dc_id]->new_incoming = [];
+
+        $this->authorized = self::LOGGED_IN;
+        $this->init_authorization();
+        return $this->authorization = $this->sync_authorization($dc_id);
+    }
+
+    public function export_authorization()
+    {
+        if ($this->authorized !== self::LOGGED_IN) {
+            throw new \danog\MadelineProto\Exception("I'm not logged in!");
+        }
+        return [$this->datacenter->curdc, $this->datacenter->sockets[$this->datacenter->curdc]->auth_key];
+    }
 
     public function complete_signup($first_name, $last_name)
     {
@@ -151,7 +181,6 @@ trait Login
             ], ['datacenter' => $this->datacenter->curdc]
         );
         $this->authorized = self::LOGGED_IN;
-        $this->authorized = true;
         $this->sync_authorization($this->datacenter->curdc);
 
         \danog\MadelineProto\Logger::log(['Signed up in successfully!'], \danog\MadelineProto\Logger::NOTICE);
diff --git a/tests/testing.php b/tests/testing.php
index 161cf8cce..21f8d271a 100755
--- a/tests/testing.php
+++ b/tests/testing.php
@@ -78,9 +78,11 @@ if ($MadelineProto === false) {
 
 $message = (getenv('TRAVIS_COMMIT') == '') ? 'I iz works always (io laborare sembre) (yo lavorar siempre) (mi labori ĉiam) (я всегда работать) (Ik werkuh altijd) (Ngimbonga ngaso sonke isikhathi ukusebenza)' : ('Travis ci tests in progress: commit '.getenv('TRAVIS_COMMIT').', job '.getenv('TRAVIS_JOB_NUMBER').', PHP version: '.getenv('TRAVIS_PHP_VERSION'));
 
-echo 'Serializing MadelineProto to session.madeline...'.PHP_EOL; echo 'Wrote 
-'.\danog\MadelineProto\Serialization::serialize('session.madeline', $MadelineProto).' bytes'.PHP_EOL;
-
+echo 'Serializing MadelineProto to session.madeline...'.PHP_EOL; echo 'Wrote '.\danog\MadelineProto\Serialization::serialize('session.madeline', $MadelineProto).' bytes'.PHP_EOL;
+/*
+$m = new \danog\MadelineProto\API($settings);
+$m->import_authorization($MadelineProto->export_authorization());
+*/
 if (stripos(readline('Do you want to make a call? (y/n): '), 'y') !== false) {
     $controller = $MadelineProto->request_call(getenv('TEST_SECRET_CHAT'))->play('input.raw')->then('input.raw')->playOnHold(['input.raw'])->setOutputFile('output.raw');
 }