diff --git a/darwin/importer/importer.py b/darwin/importer/importer.py
index f28c87db7..d56a3eedd 100644
--- a/darwin/importer/importer.py
+++ b/darwin/importer/importer.py
@@ -1518,6 +1518,9 @@ def _get_annotation_format(
     annotation_format : str
         The annotation format of the importer used to parse local files
     """
+    # This `if` block is temporary, but necessary while we migrate NifTI imports between the legacy method & the new method
+    if isinstance(importer, partial):
+        return importer.func.__module__.split(".")[3]
     return importer.__module__.split(".")[3]
 
 
diff --git a/tests/darwin/importer/importer_test.py b/tests/darwin/importer/importer_test.py
index a290a0203..70cf197df 100644
--- a/tests/darwin/importer/importer_test.py
+++ b/tests/darwin/importer/importer_test.py
@@ -1,5 +1,6 @@
 import json
 import tempfile
+from functools import partial
 from pathlib import Path
 from typing import List, Tuple
 from unittest.mock import MagicMock, Mock, _patch, patch
@@ -929,6 +930,12 @@ def test__get_annotation_format():
     assert _get_annotation_format(get_importer("superannotate")) == "superannotate"
 
 
+def test__get_annotation_format_with_partial():
+    nifti_importer = get_importer("nifti")
+    legacy_nifti_importer = partial(nifti_importer, legacy=True)
+    assert _get_annotation_format(legacy_nifti_importer) == "nifti"
+
+
 def test_no_verify_warning_for_single_slotted_items():
     bounding_box_class = dt.AnnotationClass(
         name="class1", annotation_type="bounding_box"