diff --git a/assay/src/org/labkey/assay/plate/PlateManager.java b/assay/src/org/labkey/assay/plate/PlateManager.java
index 7bf7085075b..b0c58ce4d93 100644
--- a/assay/src/org/labkey/assay/plate/PlateManager.java
+++ b/assay/src/org/labkey/assay/plate/PlateManager.java
@@ -3764,7 +3764,7 @@ public List<PlateFileBytes> exportPlateData(Container c, User user, ContainerFil
                 try (TSVGridWriter writer = new TSVGridWriter(plateQueryView::getResults, displayColumns, Collections.singletonMap(sampleIdNameFieldKey.toString(), "Sample ID")))
                 {
                     writer.setDelimiterCharacter(delim);
-                    writer.setColumnHeaderType(ColumnHeaderType.FieldKey);
+                    writer.setColumnHeaderType(ColumnHeaderType.ImportField); // Issue 53431
                     writer.write(plateFileBytes.bytes);
                 }
 
diff --git a/experiment/src/org/labkey/experiment/samples/AbstractExpFolderWriter.java b/experiment/src/org/labkey/experiment/samples/AbstractExpFolderWriter.java
index 1fbf2724e44..1962f24ffc6 100644
--- a/experiment/src/org/labkey/experiment/samples/AbstractExpFolderWriter.java
+++ b/experiment/src/org/labkey/experiment/samples/AbstractExpFolderWriter.java
@@ -96,7 +96,7 @@ protected void writeTsv(TableInfo tinfo, Collection<ColumnInfo> columns, SimpleF
         try (TSVGridWriter tsvWriter = new TSVGridWriter(factory))
         {
             tsvWriter.setApplyFormats(false);
-            tsvWriter.setColumnHeaderType(ColumnHeaderType.FieldKey);
+            tsvWriter.setColumnHeaderType(ColumnHeaderType.ImportField); // Issue 53431
             PrintWriter out = dir.getPrintWriter(baseName + ".tsv");
             tsvWriter.write(out);
         }