diff --git a/src/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php b/src/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php
index 8ee93813c..e071a9d33 100644
--- a/src/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php
+++ b/src/classes/api/endpoints/class-tainacan-rest-background-processes-controller.php
@@ -242,8 +242,9 @@ class REST_Background_Processes_Controller extends REST_Controller {
     }
 
     public function prepare_item_for_response($item, $request) {
-        $item->log = $this->get_log_url($item->ID, $item->action);
-        $item->error_log = $this->get_log_url($item->ID, $item->action, 'error');
+        $key_log = $item->bg_uuid ?? $item->ID;
+        $item->log = $this->get_log_url($key_log, $item->action);
+        $item->error_log = $this->get_log_url($key_log, $item->action, 'error');
         $nonce = wp_create_nonce( 'wp_rest' );
         $item->output = str_replace("&_wpnonce=[nonce]", "&_wpnonce=$nonce", $item->output);
         return $item;
diff --git a/src/classes/class-tainacan-background-process.php b/src/classes/class-tainacan-background-process.php
index 2a5d1c8a9..1f932839d 100644
--- a/src/classes/class-tainacan-background-process.php
+++ b/src/classes/class-tainacan-background-process.php
@@ -114,7 +114,8 @@ abstract class Background_Process extends \Tainacan_WP_Background_Process {
 					'action' => $this->action,
 					'name' => $this->get_name(),
 					'queued_on' => date('Y-m-d H:i:s'),
-					'status' => 'waiting'
+					'status' => 'waiting',
+					'bg_uuid' => uniqid(),
 				]
 			);
 			$this->ID = $wpdb->insert_id;
@@ -263,6 +264,7 @@ abstract class Background_Process extends \Tainacan_WP_Background_Process {
 		$batch->key  = $query->ID;
 		$batch->data = maybe_unserialize( $query->data );
 		$batch->status = $query->status;
+		$batch->bg_uuid = $query->bg_uuid;
 		
 		if ($batch->status != 'running') {
 			$this->open($batch->key);
@@ -271,6 +273,33 @@ abstract class Background_Process extends \Tainacan_WP_Background_Process {
 		return $batch;
 	}
 
+
+	/**
+	 * Get batch by key ID
+	 *
+	 * @return stdClass Return the batch
+	 */
+	protected function get_batch_by_key($key) {
+		global $wpdb;
+
+		$table = $this->table;
+
+		$query = $wpdb->get_row( $wpdb->prepare( "
+			SELECT *
+			FROM {$table}
+			WHERE action = %s
+			AND ID = %s
+			LIMIT 1
+		", $this->action, $key  ) );
+
+		$batch       = new \stdClass();
+		$batch->key  = $query->ID;
+		$batch->data = maybe_unserialize( $query->data );
+		$batch->status = $query->status;
+		$batch->bg_uuid = $query->bg_uuid;		
+		return $batch;
+	}
+
 	/**
 	 * Handle
 	 *
@@ -428,10 +457,14 @@ abstract class Background_Process extends \Tainacan_WP_Background_Process {
 	}
 	
 	protected function write_log($key, $log) {
-		$this->write_log_to_file($key, $log);
+		$batch = $this->get_batch_by_key($key);
+		$key_log = $batch->bg_uuid ?? $key;
+		$this->write_log_to_file($key_log, $log);
 	}
 	protected function write_error_log($key, $log) {
-		$this->write_log_to_file($key, $log, 'error');
+		$batch = $this->get_batch_by_key($key);
+		$key_log = $batch->bg_uuid ?? $key;
+		$this->write_log_to_file($key_log, $log, 'error');
 	}
 	
 	private function recursive_stingify_log_array(array $log, $break = true) {
diff --git a/src/classes/exporter/class-tainacan-exporter.php b/src/classes/exporter/class-tainacan-exporter.php
index 523a378e9..71f2479c3 100644
--- a/src/classes/exporter/class-tainacan-exporter.php
+++ b/src/classes/exporter/class-tainacan-exporter.php
@@ -689,7 +689,6 @@ abstract class Exporter {
 		$upload_dir_info = wp_upload_dir();
 		$prefix = $this->get_id();
 		$upload_dir = trailingslashit( $upload_dir_info['basedir'] );
-		// $upload_url = trailingslashit( $upload_dir_info['baseurl'] );
 		$exporter_folder = 'tainacan/exporter';
 		$file_suffix = "{$exporter_folder}/{$prefix}_{$key}";
 
diff --git a/src/migrations.php b/src/migrations.php
index 424dff8fb..161362a44 100644
--- a/src/migrations.php
+++ b/src/migrations.php
@@ -509,6 +509,20 @@ class Migrations {
 		);
 	}
 
+
+	static function alter_table_tnc_bg_process_add_uuid() {
+		global $wpdb;
+		// update default order by "creation_date" to "date"
+		$table_name = $wpdb->prefix . 'tnc_bg_process';
+		$column_exists = $wpdb->get_results(  "SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = '$table_name' AND column_name = 'bg_uuid'"  );
+
+	    if(empty($column_exists)) {
+			$wpdb->query("
+	        ALTER TABLE $table_name
+	        ADD bg_uuid text NULL
+	        ");
+		}
+	}
 }