diff --git a/cvat/apps/engine/serializers.py b/cvat/apps/engine/serializers.py
index 96755cfe54c887bab72cc3b372975f71df111824..2a3e0ae81085335834a20997066054b974f79814 100644
--- a/cvat/apps/engine/serializers.py
+++ b/cvat/apps/engine/serializers.py
@@ -642,24 +642,27 @@ class TaskWriteSerializer(WriteOnceMixin, serializers.ModelSerializer):
                 sublabels = label.pop('sublabels', [])
                 svg = label.pop('svg', '')
                 db_label = models.Label.objects.create(task=db_task, parent=parent_label, **label)
+                logger.info(f'label:create: Label id:{db_label.id} for spec:{label} with sublabels:{sublabels}, parent_label:{parent_label}')
                 create_labels(sublabels, parent_label=db_label)
                 if db_label.type == str(models.LabelType.SKELETON):
                     for db_sublabel in list(db_label.sublabels.all()):
                         svg = svg.replace(f'data-label-name="{db_sublabel.name}"', f'data-label-id="{db_sublabel.id}"')
-                    models.Skeleton.objects.create(root=db_label, svg=svg)
+                    db_skeleton = models.Skeleton.objects.create(root=db_label, svg=svg)
+                    logger.info(f'label:create Skeleton id:{db_skeleton.id} for label_id:{db_label.id}')
 
                 for attr in attributes:
                     if attr.get('id', None):
                         del attr['id']
                     models.AttributeSpec.objects.create(label=db_label, **attr)
 
-        create_labels(labels)
         task_path = db_task.get_dirname()
         if os.path.isdir(task_path):
             shutil.rmtree(task_path)
 
         os.makedirs(db_task.get_task_logs_dirname())
         os.makedirs(db_task.get_task_artifacts_dirname())
+        logger = slogger.task[db_task.id]
+        create_labels(labels)
 
         db_task.save()
         return db_task
@@ -674,16 +677,22 @@ class TaskWriteSerializer(WriteOnceMixin, serializers.ModelSerializer):
         instance.subset = validated_data.get('subset', instance.subset)
         labels = validated_data.get('label_set', [])
 
+        logger = slogger.task[instance.id]
         def update_labels(labels, parent_label=None):
             for label in labels:
                 sublabels = label.pop('sublabels', [])
                 svg = label.pop('svg', '')
                 db_label = LabelSerializer.update_instance(label, instance, parent_label)
+                if db_label:
+                    logger.info(f'label:update Label id:{db_label.id} for spec:{label} with sublabels:{sublabels}, parent_label:{parent_label}')
+                else:
+                    logger.info(f'label:delete label:{label} with sublabels:{sublabels}, parent_label:{parent_label}')
                 update_labels(sublabels, parent_label=db_label)
                 if label.get('id') is None and db_label.type == str(models.LabelType.SKELETON):
                     for db_sublabel in list(db_label.sublabels.all()):
                         svg = svg.replace(f'data-label-name="{db_sublabel.name}"', f'data-label-id="{db_sublabel.id}"')
-                    models.Skeleton.objects.create(root=db_label, svg=svg)
+                    db_skeleton = models.Skeleton.objects.create(root=db_label, svg=svg)
+                    logger.info(f'label:update Skeleton id:{db_skeleton.id} for label_id:{db_label.id}')
 
         if instance.project_id is None:
             update_labels(labels)
@@ -870,24 +879,27 @@ class ProjectWriteSerializer(serializers.ModelSerializer):
                 sublabels = label.pop('sublabels', [])
                 svg = label.pop('svg', [])
                 db_label = models.Label.objects.create(project=db_project, parent=parent_label, **label)
+                logger.info(f'label:create Label id:{db_label.id} for spec:{label} with sublabels:{sublabels}, parent_label:{parent_label}')
                 create_labels(sublabels, parent_label=db_label)
                 if db_label.type == str(models.LabelType.SKELETON):
                     for db_sublabel in list(db_label.sublabels.all()):
                         svg = svg.replace(f'data-label-name="{db_sublabel.name}"', f'data-label-id="{db_sublabel.id}"')
-                    models.Skeleton.objects.create(root=db_label, svg=svg)
+                    db_skeleton = models.Skeleton.objects.create(root=db_label, svg=svg)
+                    logger.info(f'label:create Skeleton id:{db_skeleton.id} for label_id:{db_label.id}')
 
                 for attr in attributes:
                     if attr.get('id', None):
                         del attr['id']
                     models.AttributeSpec.objects.create(label=db_label, **attr)
 
-        create_labels(labels)
-
         project_path = db_project.get_dirname()
         if os.path.isdir(project_path):
             shutil.rmtree(project_path)
         os.makedirs(db_project.get_project_logs_dirname())
 
+        logger = slogger.project[db_project.id]
+        create_labels(labels)
+
         return db_project
 
     # pylint: disable=no-self-use
@@ -898,18 +910,24 @@ class ProjectWriteSerializer(serializers.ModelSerializer):
         instance.bug_tracker = validated_data.get('bug_tracker', instance.bug_tracker)
         labels = validated_data.get('label_set', [])
 
+        logger = slogger.project[instance.id]
         def update_labels(labels, parent_label=None):
             for label in labels:
                 sublabels = label.pop('sublabels', [])
                 svg = label.pop('svg', '')
                 db_label = LabelSerializer.update_instance(label, instance, parent_label)
+                if db_label:
+                    logger.info(f'label:update Label id:{db_label.id} for spec:{label} with sublabels:{sublabels}, parent_label:{parent_label}')
+                else:
+                    logger.info(f'label:delete label:{label} with sublabels:{sublabels}, parent_label:{parent_label}')
                 if not label.get('deleted'):
                     update_labels(sublabels, parent_label=db_label)
 
                     if label.get('id') is None and db_label.type == str(models.LabelType.SKELETON):
                         for db_sublabel in list(db_label.sublabels.all()):
                             svg = svg.replace(f'data-label-name="{db_sublabel.name}"', f'data-label-id="{db_sublabel.id}"')
-                        models.Skeleton.objects.create(root=db_label, svg=svg)
+                        db_skeleton = models.Skeleton.objects.create(root=db_label, svg=svg)
+                        logger.info(f'label:update: Skeleton id:{db_skeleton.id} for label_id:{db_label.id}')
 
         update_labels(labels)