diff --git a/kontor-scripts/import.py b/kontor-scripts/import.py
index a2ad941..297a15d 100644
--- a/kontor-scripts/import.py
+++ b/kontor-scripts/import.py
@@ -29,7 +29,7 @@ DATABASE_URL: str = f"postgresql://{DB_USER}:{DB_PASSWORD}@{DB_SERVER}:{DB_PORT}
 
 
 def cleanup_database(db: Session, log, dry_run: bool):
-    log.info("cleanup_database")
+    log.debug("cleanup_database")
     # get tables from registry
     for table in registry:
         log.info(f"{table}")
@@ -41,7 +41,7 @@ def cleanup_database(db: Session, log, dry_run: bool):
                 db.commit()
 
 def load_data(filename: str, log) -> Dict[AnyStr, Dict[AnyStr, Any]]:
-    log.info("load_data")
+    log.debug("load_data")
     import_file = Path(filename)
     if not import_file.exists():
         log.info(f"File {filename} does not exist. Do nothing.")
@@ -57,6 +57,16 @@ def get_ids(items: List[Any]) -> List[AnyStr]:
         result.append(item.id)
     return result
 
+def update_item(db: Session, import_data: Dict[AnyStr, Any], item: Any, dry_run: bool, log):
+    for (key, value) in import_data.items():
+        existing_value = getattr(item, str(key))
+        if existing_value != value:
+            if not dry_run:
+                log.info(f"update {key}({existing_value}) with {value}")
+                setattr(model, str(key), value)
+                db.add(item)
+                db.commit()
+
 
 if __name__ == '__main__':
     logger = get_logger(args.verbose, "kontor")
@@ -76,9 +86,12 @@ if __name__ == '__main__':
             import_items = data[tablename]
             for import_item in import_items:
                 if import_item['id'] in existing_ids:
-                    logger.info(f"update {import_item['id']}")
+                    logger.debug(f"update {import_item['id']}")
+                    existing_item = db.get(model, import_item['id'])
+                    update_item(db, import_item, existing_item, args.dry_run, logger)
+                    existing_ids.remove(import_item['id'])
                 else:
-                    logger.info(f"import {import_item['id']}")
-
+                    logger.debug(f"import {import_item['id']}")
+            logger.info(f"remaining items for {tablename}: {len(existing_ids)}")
     logger.info('kontor.import finished')