diff --git a/lib/Subscribers/InactiveSubscribersController.php b/lib/Subscribers/InactiveSubscribersController.php
index ea1cef4673..5fbc6708cf 100644
--- a/lib/Subscribers/InactiveSubscribersController.php
+++ b/lib/Subscribers/InactiveSubscribersController.php
@@ -3,9 +3,11 @@
 namespace MailPoet\Subscribers;
 
 use Carbon\Carbon;
+use MailPoet\Config\MP2Migrator;
 use MailPoet\Models\ScheduledTask;
 use MailPoet\Models\ScheduledTaskSubscriber;
 use MailPoet\Models\SendingQueue;
+use MailPoet\Models\Setting;
 use MailPoet\Models\StatisticsOpens;
 use MailPoet\Models\Subscriber;
 
@@ -79,6 +81,13 @@ class InactiveSubscribersController {
       $threshold_date_iso, $threshold_date_iso, $day_ago_iso
     );
 
+    // If MP2 migration occurred during detection interval we can't deactivate subscribers
+    // because they are imported with original subscription date but they were not present in a list for whole period
+    $mp2_migration_date = $this->getMP2MigrationDate();
+    if ($mp2_migration_date && $mp2_migration_date > $threshold_date) {
+      return 0;
+    }
+
     // Select subscribers who received a recent tracked email but didn't open it
     $ids_to_deactivate = \ORM::forTable($subscribers_table)->rawQuery("
       SELECT s.id FROM $subscribers_table as s
@@ -140,4 +149,12 @@ class InactiveSubscribersController {
     ));
     return count($ids_to_activate);
   }
+
+  private function getMP2MigrationDate() {
+    $migration_complete = Setting::where('name', MP2Migrator::MIGRATION_COMPLETE_SETTING_KEY)->findOne();
+    if ($migration_complete === false) {
+      return null;
+    }
+    return new Carbon($migration_complete->created_at);
+  }
 }
diff --git a/tests/integration/Subscribers/InactiveSubscribersControllerTest.php b/tests/integration/Subscribers/InactiveSubscribersControllerTest.php
index ca6cc214d4..e7a00a382d 100644
--- a/tests/integration/Subscribers/InactiveSubscribersControllerTest.php
+++ b/tests/integration/Subscribers/InactiveSubscribersControllerTest.php
@@ -3,10 +3,12 @@
 namespace MailPoet\Subscribers;
 
 use Carbon\Carbon;
+use MailPoet\Config\MP2Migrator;
 use MailPoet\Models\Newsletter;
 use MailPoet\Models\ScheduledTask;
 use MailPoet\Models\ScheduledTaskSubscriber;
 use MailPoet\Models\SendingQueue;
+use MailPoet\Models\Setting;
 use MailPoet\Models\StatisticsOpens;
 use MailPoet\Models\Subscriber;
 use MailPoet\Tasks\Sending;
@@ -143,6 +145,24 @@ class InactiveSubscribersControllerTest extends \MailPoetTest {
     expect($subscriber->status)->equals(Subscriber::STATUS_SUBSCRIBED);
   }
 
+  function testItDoesNotDeactivatesSubscribersWhenMP2MigrationHappenedWithinInterval() {
+    list($task) = $this->createCompletedSendingTaskWithOneOpen(3);
+
+    $migration_complete_setting = Setting::createOrUpdate([
+      'name' => MP2Migrator::MIGRATION_COMPLETE_SETTING_KEY,
+      'created_at' => (new Carbon())->subDays(3),
+    ]);
+
+    $subscriber = $this->createSubscriber('s1@email.com', 10);
+    $this->addSubcriberToTask($subscriber, $task);
+
+    $result = $this->controller->markInactiveSubscribers(5, 100);
+    expect($result)->equals(0);
+    $subscriber = Subscriber::findOne($subscriber->id);
+    expect($subscriber->status)->equals(Subscriber::STATUS_SUBSCRIBED);
+    $migration_complete_setting->delete();
+  }
+
   function testItActivatesSubscriberWhoRecentlyOpenedEmail() {
     list($task, $queue) = $this->createCompletedSendingTask(2);
     $subscriber = $this->createSubscriber('s1@email.com', 10, Subscriber::STATUS_INACTIVE);