diff --git a/imgui_tables.cpp b/imgui_tables.cpp
--- a/imgui_tables.cpp
+++ b/imgui_tables.cpp
@@ -4082,7 +4082,9 @@
     }
     if (load_flags & ImGuiTableFlags_Reorderable)
         column->DisplayOrder = column_settings->DisplayOrder;
-    else
+    else if (column_settings->Index != -1)
+        // An Index of -1 means this column had no "Column N" line in the .ini file (columns without saved
+        // data are not written). Keep the display order as initialized (identity for non-reorderable tables). (#9519)
         column->DisplayOrder = column_settings->Index; // Because default depends on previous Index, we need to set that up and cannot rely on TableInitColumnDefaults()
     if ((load_flags & ImGuiTableFlags_Hideable) && column_settings->IsEnabled != -1)
         column->IsUserEnabled = column->IsUserEnabledNextFrame = (column_settings->IsEnabled == 1);