diff --git a/src/DIRAC/TransformationSystem/Client/TransformationClient.py b/src/DIRAC/TransformationSystem/Client/TransformationClient.py
index 3710e25df53..7f1b7daa81a 100644
--- a/src/DIRAC/TransformationSystem/Client/TransformationClient.py
+++ b/src/DIRAC/TransformationSystem/Client/TransformationClient.py
@@ -179,12 +179,14 @@ def getTransformationFiles(
             res = rpcClient.getTransformationFiles(
                 condDict, older, newer, timeStamp, orderAttribute, offset, maxfiles, columns
             )
+            # TransformationDB.getTransformationFiles includes a "Records"/"ParameterNames"
+            # that we don't want to return to the client so explicitly return S_OK with the value
             if not res["OK"]:
                 return res
             return S_OK(res["Value"])
 
-        # If LFNs requested continue to do the old behavior of requesting in small batches
-        # Probably not needed?
+        # If LFNs requested, request in small batches, because...
+        # Probably not needed? Because this should always be a list
         if isinstance(condDict["LFN"], str):
             lfnList = [condDict["LFN"]]
         else:
diff --git a/src/DIRAC/TransformationSystem/DB/TransformationDB.py b/src/DIRAC/TransformationSystem/DB/TransformationDB.py
index 634bfaa487c..aaf054156cb 100755
--- a/src/DIRAC/TransformationSystem/DB/TransformationDB.py
+++ b/src/DIRAC/TransformationSystem/DB/TransformationDB.py
@@ -628,7 +628,7 @@ def getTransformationFiles(
                 else:
                     return S_ERROR(f"Invalid key {key} in condDict")
         if timeStamp:
-            timeStamp = f"t.{timeStamp}"
+            timeStamp = f"tf.{timeStamp}"
         if fixedCondDict or older or newer:
             cond = self.buildCondition(fixedCondDict, older, newer, timeStamp, orderAttribute, limit, offset=offset)
             # When buildCondition tries to quote the column names, it will fail due to the table alias
diff --git a/tests/Integration/TransformationSystem/Test_Client_Transformation.py b/tests/Integration/TransformationSystem/Test_Client_Transformation.py
index 3cf1287253c..710ce4ff061 100644
--- a/tests/Integration/TransformationSystem/Test_Client_Transformation.py
+++ b/tests/Integration/TransformationSystem/Test_Client_Transformation.py
@@ -114,6 +114,17 @@ def test_addTasksAndFiles(self):
         for f in res["Value"]:
             self.assertEqual(f["Status"], TransformationFilesStatus.ASSIGNED)
 
+        # make sure we can selectively select LFNs
+        res = self.transClient.getTransformationFiles({"TransformationID": transID, "LFN": ["/aa/lfn.1.txt"]})
+        assert res["OK"], res
+        assert len(res["Value"]) == 1, res
+        assert "TargetSE" in res["Value"][0].keys(), res
+
+        # make sure we can selectively select columns
+        res = self.transClient.getTransformationFiles({"TransformationID": transID}, columns=["LFN", "Status"])
+        assert res["OK"], res
+        assert sorted(res["Value"][0]) == ["LFN", "Status"], res
+
         # now adding a new Transformation with new tasks, and introducing a mix of insertion,
         # to test that the trigger works as it should
         res = self.transClient.addTransformation(