diff --git a/observatory-platform/observatory/platform/files.py b/observatory-platform/observatory/platform/files.py
index 8e061053d..26283e851 100644
--- a/observatory-platform/observatory/platform/files.py
+++ b/observatory-platform/observatory/platform/files.py
@@ -238,6 +238,17 @@ def save_jsonl_gz(file_path: str, data: List[Dict]) -> None:
             jsonl_gzip_file.write(bytes_io.getvalue())
 
 
+def save_jsonl(file_path: str, data: List[Dict]) -> None:
+    """Takes a list of dictionaries and writes this to a jsonl file.
+    :param file_path: Path to the .jsonl.gz file
+    :param data: a list of dictionaries that can be written out with jsonlines
+    :return: None.
+    """
+
+    with jsonlines.Writer(file_path) as writer:
+        writer.write_all(data)
+
+
 def load_file(file_name: str, modes="r"):
     """Load a file.
 
diff --git a/observatory-platform/observatory/platform/workflows/workflow.py b/observatory-platform/observatory/platform/workflows/workflow.py
index 60cf905ef..d5d9bbbe6 100644
--- a/observatory-platform/observatory/platform/workflows/workflow.py
+++ b/observatory-platform/observatory/platform/workflows/workflow.py
@@ -217,8 +217,8 @@ def __init__(
         *,
         dag_id: str,
         run_id: str,
-        changefile_start_date: pendulum.DateTime = None,
-        changefile_end_date: pendulum.DateTime = None,
+        start_date: pendulum.DateTime = None,
+        end_date: pendulum.DateTime = None,
         sequence_start: int = None,
         sequence_end: int = None,
     ):
@@ -226,27 +226,27 @@ def __init__(
 
         :param dag_id: the DAG ID.
         :param run_id: the DAG's run ID.
-        :param changefile_start_date: the date of the first changefile processed in this release.
-        :param changefile_end_date: the date of the last changefile processed in this release.
+        :param start_date: the date of the first changefile processed in this release.
+        :param end_date: the date of the last changefile processed in this release.
         :param sequence_start: the starting sequence number of files that make up this release.
         :param sequence_end: the end sequence number of files that make up this release.
         """
 
         super().__init__(dag_id=dag_id, run_id=run_id)
-        self.changefile_start_date = changefile_start_date
-        self.changefile_end_date = changefile_end_date
+        self.start_date = start_date
+        self.end_date = end_date
         self.sequence_start = sequence_start
         self.sequence_end = sequence_end
 
-        changefile = f"changefile_{changefile_start_date.format(DATE_TIME_FORMAT)}_to_{changefile_end_date.format(DATE_TIME_FORMAT)}"
+        changefile = f"changefile_{start_date.format(DATE_TIME_FORMAT)}_to_{end_date.format(DATE_TIME_FORMAT)}"
         self.download_folder = make_workflow_folder(self.dag_id, run_id, changefile, "download")
         self.extract_folder = make_workflow_folder(self.dag_id, run_id, changefile, "extract")
         self.transform_folder = make_workflow_folder(self.dag_id, run_id, changefile, "transform")
 
     def __str__(self):
         return (
-            f"Release(dag_id={self.dag_id}, run_id={self.run_id}, changefile_start_date={self.changefile_start_date}, "
-            f"changefile_end_date={self.changefile_end_date}, sequence_start={self.sequence_start}, sequence_end={self.sequence_end})"
+            f"Release(dag_id={self.dag_id}, run_id={self.run_id}, start_date={self.start_date}, "
+            f"end_date={self.end_date}, sequence_start={self.sequence_start}, sequence_end={self.sequence_end})"
         )