diff --git a/src/murfey/client/contexts/tomo_metadata.py b/src/murfey/client/contexts/tomo_metadata.py
index 7d85a6a5..155f0937 100644
--- a/src/murfey/client/contexts/tomo_metadata.py
+++ b/src/murfey/client/contexts/tomo_metadata.py
@@ -1,4 +1,6 @@
 import logging
+import shutil
+from datetime import datetime
 from pathlib import Path
 from typing import Optional
 
@@ -208,6 +210,11 @@ def post_transfer(
 
         elif transferred_file.name == "BatchPositionsList.xml":
             logger.info("Tomography session batch positions list found")
+            shutil.copy(
+                transferred_file,
+                transferred_file.parent
+                / f"{transferred_file.stem}-{datetime.now().strftime('%Y-%m-%d-%H-%M-%S')}{transferred_file.suffix}",
+            )
             dcg_tag = ensure_dcg_exists(
                 collection_type="tomo",
                 metadata_source=metadata_source,
diff --git a/src/murfey/client/rsync.py b/src/murfey/client/rsync.py
index deae2f44..5d27dc0d 100644
--- a/src/murfey/client/rsync.py
+++ b/src/murfey/client/rsync.py
@@ -133,10 +133,6 @@ def from_rsyncer(cls, rsyncer: RSyncer, **kwargs):
             "notify": rsyncer._notify,
         }
         kwarguments_from_rsyncer.update(kwargs)
-        assert isinstance(kwarguments_from_rsyncer["local"], bool)
-        assert isinstance(kwarguments_from_rsyncer["do_transfer"], bool)
-        assert isinstance(kwarguments_from_rsyncer["remove_files"], bool)
-        assert isinstance(kwarguments_from_rsyncer["notify"], bool)
         return cls(
             rsyncer._basepath,
             rsyncer._basepath_remote,