switch order of default config apply

preprocessor/preprocessor/preprocess.py

@@ -145,7 +145,7 @@ def preprocess_file(config: dict, file_path: os.PathLike, use_dir: os.PathLike=N
         # get a concrete configuration for the type, filled with the defaults
         default_config = dict(config['preprocessing'].get('defaults', {}))
         preprocess_config = dict(config['preprocessing']['types'].get(product_type, {}))
-        preprocess_config.update(default_config)
+        default_config.update(preprocess_config)
 
         logger.debug('Using preprocessing config %s' % pformat(preprocess_config))