diff --git a/inc/computersync.class.php b/inc/computersync.class.php
index d5666a3..e19f5c7 100644
--- a/inc/computersync.class.php
+++ b/inc/computersync.class.php
@@ -540,6 +540,7 @@ public static function discover(): bool
             $imported[] = $data['jamf_items_id'];
         }
         $pending_iterator = $DB->request([
+            'SELECT' => ['jamf_items_id'],
             'FROM' => 'glpi_plugin_jamf_imports',
             'WHERE' => [
                 'jamf_type' => 'Computer'
@@ -547,7 +548,7 @@ public static function discover(): bool
         ]);
         $pending_import = [];
         foreach ($pending_iterator as $data) {
-            $pending_import[$data['jamf_items_id']] = $data;
+            $pending_import[] = $data['jamf_items_id'];
         }
 
         $config = Config::getConfigurationValues('plugin:Jamf');
@@ -564,7 +565,7 @@ public static function discover(): bool
                         // Some other error
                     }
                 } else {
-                    if (!array_key_exists($jamf_device['id'], $pending_import)) {
+                    if (!in_array((int) $jamf_device['id'], $pending_import, true)) {
                         // Just discovered and cannot auto-import. Save to imports table instead.
                         $DB->insert('glpi_plugin_jamf_imports', [
                             'jamf_type' => 'Computer',
diff --git a/inc/migration.class.php b/inc/migration.class.php
index 7f8bf59..f332554 100644
--- a/inc/migration.class.php
+++ b/inc/migration.class.php
@@ -605,4 +605,12 @@ public function apply_3_0_1_migration(): void
         // Change udid column in glpi_plugin_jamf_imports to allow NULL values
         $this->db->queryOrDie('ALTER TABLE `glpi_plugin_jamf_imports` MODIFY `udid` VARCHAR(100) NULL DEFAULT NULL');
     }
+
+    public function apply_3_1_1_migration(): void
+    {
+        // Fix unicity constraint on imports table
+        $this->glpiMigration->dropKey('glpi_plugin_jamf_imports', 'unicity');
+        // Unicity should be on jamf_type (The type in Jamf: Computer/MobileDevice) and jamf_items_id, not jamf_items_id and type (The type of asset in GLPI)
+        $this->glpiMigration->addKey('glpi_plugin_jamf_imports', ['jamf_type', 'jamf_items_id'], 'unicity', 'UNIQUE');
+    }
 }
diff --git a/inc/mobilesync.class.php b/inc/mobilesync.class.php
index b30fb48..3c91179 100644
--- a/inc/mobilesync.class.php
+++ b/inc/mobilesync.class.php
@@ -659,6 +659,7 @@ public static function discover(): bool
             $imported[] = $data['udid'];
         }
         $pending_iterator = $DB->request([
+            'SELECT' => ['jamf_items_id'],
             'FROM' => 'glpi_plugin_jamf_imports',
             'WHERE' => [
                 'jamf_type' => 'MobileDevice'
@@ -666,12 +667,12 @@ public static function discover(): bool
         ]);
         $pending_import = [];
         foreach ($pending_iterator as $data) {
-            $pending_import[$data['udid']] = $data;
+            $pending_import[] = $data['jamf_items_id'];
         }
 
         $config = Config::getConfigurationValues('plugin:Jamf');
         foreach ($jamf_devices as $jamf_device) {
-            if (!in_array($jamf_device['udid'], $imported, true)) {
+            if (!in_array($jamf_device['id'], $imported, true)) {
                 $itemtype = strpos($jamf_device['model_identifier'], 'iPhone') !== false ? 'Phone' : 'Computer';
                 if (isset($config['autoimport']) && $config['autoimport']) {
                     try {
@@ -683,7 +684,7 @@ public static function discover(): bool
                         // Some other error
                     }
                 } else {
-                    if (!array_key_exists($jamf_device['udid'], $pending_import)) {
+                    if (!in_array((int) $jamf_device['id'], $pending_import, true)) {
                         $DB->insert('glpi_plugin_jamf_imports', [
                             'jamf_type' => 'MobileDevice',
                             'jamf_items_id' => $jamf_device['id'],