diff --git a/imap_processing/idex/idex_variable_unpacking_and_eu_conversion.csv b/imap_processing/idex/idex_variable_unpacking_and_eu_conversion.csv
index 793897ef6..80927ecbe 100644
--- a/imap_processing/idex/idex_variable_unpacking_and_eu_conversion.csv
+++ b/imap_processing/idex/idex_variable_unpacking_and_eu_conversion.csv
@@ -10,8 +10,8 @@
 9,detector_voltage,idx__txhdrhvpshkch01,4,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
 10,sensor_voltage,idx__txhdrhvpshkch01,20,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
 11,target_voltage,idx__txhdrhvpshkch23,4,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
-12,reflectron_voltage,idx__txhdrhvpshkch23,20,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
-13,rejection_voltage,idx__txhdrhvpshkch45,4,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
+12,rejection_voltage,idx__txhdrhvpshkch23,20,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
+13,reflectron_voltage,idx__txhdrhvpshkch45,4,4,12,V,0,1.4652,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
 14,current_hvps_sensor,idx__txhdrhvpshkch45,20,4,12,mA,0,0.000007326,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
 15,positive_current_hvps,idx__txhdrhvpshkch67,4,4,12,mA,0,0.000024339,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
 16,negative_current_hvps,idx__txhdrhvpshkch67,20,4,12,mA,0,0.000024339,0,0,0,0,0,0,UNSEGMENTED_POLY,IDEX_SCI
diff --git a/imap_processing/tests/external_test_data_config.py b/imap_processing/tests/external_test_data_config.py
index 416f8dfee..3b7c77e30 100644
--- a/imap_processing/tests/external_test_data_config.py
+++ b/imap_processing/tests/external_test_data_config.py
@@ -135,7 +135,7 @@
 
     # IDEX
     ("idex_l1a_validation_file.h5", "idex/test_data/"),
-    ("imap_idex_l1b_sci_20231218_v001.h5", "idex/test_data/"),
+    ("imap_idex_l1b_sci_20231218_v002.h5", "idex/test_data/"),
     ("imap_idex_l2a-calibration-curve-yield-params_20250101_v001.csv", "idex/test_data/"),
     ("imap_idex_l2a-calibration-curve-t-rise_20250101_v001.csv", "idex/test_data/"),
 
diff --git a/imap_processing/tests/idex/conftest.py b/imap_processing/tests/idex/conftest.py
index 35bee8c54..2e6d3af38 100644
--- a/imap_processing/tests/idex/conftest.py
+++ b/imap_processing/tests/idex/conftest.py
@@ -17,7 +17,7 @@
 TEST_L0_FILE_CATLST = TEST_DATA_PATH / "imap_idex_l0_raw_20241206_v001.pkts"  # 1419
 
 L1A_EXAMPLE_FILE = TEST_DATA_PATH / "idex_l1a_validation_file.h5"
-L1B_EXAMPLE_FILE = TEST_DATA_PATH / "imap_idex_l1b_sci_20231218_v001.h5"
+L1B_EXAMPLE_FILE = TEST_DATA_PATH / "imap_idex_l1b_sci_20231218_v002.h5"
 
 L2A_CDF = TEST_DATA_PATH / "imap_idex_l2a_sci-1week_20251017_v001.cdf"
 L1B_EVT_CDF = TEST_DATA_PATH / "imap_idex_l1b_evt_20250108_v001.cdf"