diff --git a/CHANGES.rst b/CHANGES.rst
index dddb9ca3758..0a9f65f86c1 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,7 +1,13 @@
 1.9.2 (unreleased)
 ==================
 
--
+calwebb_spec2
+-------------
+- Subtract leakcal image from science and backgrounds and then background subtract [#7426]
+
+imprint
+-------
+- Add matching leakcal image and science/background image by using dither.position_number [#7426]
 
 1.9.1 (2023-01-03)
 ==================
diff --git a/jwst/imprint/imprint_step.py b/jwst/imprint/imprint_step.py
index 2236d1dc188..7156e26e82c 100755
--- a/jwst/imprint/imprint_step.py
+++ b/jwst/imprint/imprint_step.py
@@ -18,6 +18,8 @@ class ImprintStep(Step):
 
     def process(self, input, imprint, imprint_pos_no):
 
+        # imprint_pos_no - a list of the position numbers corresponding to the list of imprints
+        
         # subtract leakcal (imprint) image
         # If only 1 imprint image is in the association use for for science and if there a background
         # If more than 1 imprint image exists in the association then select the imprint  image to
diff --git a/jwst/imprint/tests/test_imprint.py b/jwst/imprint/tests/test_imprint.py
index 260c46dc0c3..1b4e331d5b6 100644
--- a/jwst/imprint/tests/test_imprint.py
+++ b/jwst/imprint/tests/test_imprint.py
@@ -12,7 +12,11 @@ def test_step(make_imagemodel):
     """Assert that the results should be all zeros.
     """
     im = make_imagemodel(10, 10)
-    result = ImprintStep.call(im, im)
+    pos_no = []
+    imprint = []
+    pos_no.append(0)
+    imprint.append(im)
+    result = ImprintStep.call(im, imprint, pos_no)
 
     assert result.meta.cal_step.imprint == 'COMPLETE'
     assert result.data.sum() == 0
diff --git a/jwst/pipeline/calwebb_spec2.py b/jwst/pipeline/calwebb_spec2.py
index 0fde5ead6bf..dadf2a01bdc 100644
--- a/jwst/pipeline/calwebb_spec2.py
+++ b/jwst/pipeline/calwebb_spec2.py
@@ -526,6 +526,8 @@ def _process_common(self, data):
 
     def _imprint_pos_no(self, members_by_type):
         """Find the position number for each imprint image"""
+
+        # members_by_type['imprint'] is a list of imprint images
         imprint_pos_no = []
         for i, imprint_file in enumerate(members_by_type['imprint']):
             imprint_model = datamodels.open(imprint_file)