Default config.full_refresh also None

dlt/pipeline/configuration.py

@@ -25,7 +25,7 @@ class PipelineConfiguration(BaseConfiguration):
     """Enables the tracing. Tracing saves the execution trace locally and is required by `dlt deploy`."""
     use_single_dataset: bool = True
     """Stores all schemas in single dataset. When False, each schema will get a separate dataset with `{dataset_name}_{schema_name}"""
-    full_refresh: bool = False
+    full_refresh: Optional[bool] = None
     """Deprecated. Use `dev_mode` instead. When set to True, each instance of the pipeline with the `pipeline_name` starts from scratch when run and loads the data to a separate dataset."""
     dev_mode: bool = False
     """When set to True, each instance of the pipeline with the `pipeline_name` starts from scratch when run and loads the data to a separate dataset."""