diff --git a/src/classes/repositories/class-tainacan-repository.php b/src/classes/repositories/class-tainacan-repository.php
index 5b6f38101..8559c26fa 100644
--- a/src/classes/repositories/class-tainacan-repository.php
+++ b/src/classes/repositories/class-tainacan-repository.php
@@ -537,7 +537,22 @@ abstract class Repository {
     	
     	foreach ($map as $prop => $mapped) {
    			if($old_entity->get_mapped_property($prop) != $new_entity->get_mapped_property($prop) ) {
-   				$diff[$prop] = ['new' => $new_entity->get_mapped_property($prop), 'old' => $old_entity->get_mapped_property($prop)];
+   				if($mapped['map'] == 'meta_multi') {
+   					$meta_diff = array_diff( $new_entity->get_mapped_property($prop), $old_entity->get_mapped_property($prop) );
+   					if( !empty($meta_diff) ) {
+	   					$diff[$prop] = [
+	   						'new' => $new_entity->get_mapped_property($prop),
+	   						'old' => $old_entity->get_mapped_property($prop),
+	   						'diff' => $meta_diff //TODO better expose difference
+	   					];
+   					}
+   				}
+   				else {
+   					$diff[$prop] = [
+   						'new' => $new_entity->get_mapped_property($prop),
+   						'old' => $old_entity->get_mapped_property($prop)
+   					];
+   				}
    			}
     	}
     	$diff = apply_filters('tainacan-entity-diff', $diff, $new, $old);
diff --git a/tests/test-collections.php b/tests/test-collections.php
index dea0f6aaf..745e2e97f 100644
--- a/tests/test-collections.php
+++ b/tests/test-collections.php
@@ -228,21 +228,25 @@ class Collections extends TAINACAN_UnitTestCase {
     	$x = $this->tainacan_entity_factory->create_entity(
     		'collection',
     		array(
-    			'name'          => 'testeDiff',
-    			'description'   => 'adasdasdsa',
-    			'default_order' => 'DESC'
+    			'name'				=> 'testeDiff',
+    			'description'		=> 'adasdasdsa',
+    			'default_order' 	=> 'DESC',
+    			'moderators_ids'	=> [1,2,3]
     		),
     		true
     	);
     	
     	$x->set_name('OtherValue');
     	$x->set_description('testeDiff2');
+    	$x->set_moderators_ids([3,4,5]);
     	
     	$diff = $x->diff();
-    	$this->assertEquals(2, count($diff));
+    	$this->assertEquals(3, count($diff));
     	$this->assertEquals($diff['name']['new'], 'OtherValue');
     	$this->assertEquals($diff['name']['old'], 'testeDiff');
     	$this->assertEquals($diff['description']['new'], 'testeDiff2');
     	$this->assertEquals($diff['description']['old'], 'adasdasdsa');
+    	$this->assertEquals([1 => 4, 2 => 5], $diff['moderators_ids']['diff']);
+    	
     }
 }