diff --git a/Generators/GeneratorConfig/data/Legacy_SampleOverrides.txt b/Generators/GeneratorConfig/data/Legacy_SampleOverrides.txt
new file mode 100644
index 0000000000000000000000000000000000000000..e22e63cfe649cc5719563b05a36b1d3d902c5cba
--- /dev/null
+++ b/Generators/GeneratorConfig/data/Legacy_SampleOverrides.txt
@@ -0,0 +1,9 @@
+DSID,e-tag
+# Sherpa 2.2.11 Zee Mll 10-40
+700467,e8338
+700468,e8338
+700469,e8338
+# Sherpa 2.2.11 Zmumu Mll 10-40
+700470,e8338
+700471,e8338
+700472,e8338
diff --git a/Generators/GeneratorConfig/python/Versioning.py b/Generators/GeneratorConfig/python/Versioning.py
index 7aed02555d3aaaf47a55a93ded7db730fe43b311..61e3fd27b2b3044fae445127635590e5a45173dd 100644
--- a/Generators/GeneratorConfig/python/Versioning.py
+++ b/Generators/GeneratorConfig/python/Versioning.py
@@ -1,4 +1,4 @@
-# Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 from os import getenv
 
 import re
@@ -22,6 +22,21 @@ def legacyReleaseData():
             data[line[1]] = item
     return data
 
+def legacyReleaseDataSampleOverrides():
+    from pathlib import Path
+    from PathResolver import PathResolver
+    filePath = Path(PathResolver.FindCalibFile("GeneratorConfig/Legacy_SampleOverrides.txt"))
+    data = {}
+    with filePath.open() as f:
+        f.readline() # skip header
+        for line in f:
+            line = line.strip()
+            if line[0] == "#":
+                continue
+            line = line.split(",")
+            data[int(line[0])] = line[1]
+    return data
+
 def generatorsGetInitialVersionedDictionary(generators):
     output = {}
     for generator in generators:
@@ -78,6 +93,12 @@ def GeneratorVersioningFixCfg(flags):
     if tags and tags[0].startswith("e"):
         tag = tags[0]
 
+    # Fix specific samples
+    releaseDataSampleOverridesDict = legacyReleaseDataSampleOverrides()
+    if flags.Input.MCChannelNumber and flags.Input.MCChannelNumber in releaseDataSampleOverridesDict:
+        log.warning(f"Overriding e-tag for sample {flags.Input.MCChannelNumber} to {releaseDataSampleOverridesDict[flags.Input.MCChannelNumber]}.")
+        tag = releaseDataSampleOverridesDict[flags.Input.MCChannelNumber]
+
     releaseDataDict = legacyReleaseData()
     if tag not in releaseDataDict:
         log.warning(f"Could not find release data for tag {tag}.")