Index: trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc
===================================================================
--- trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc	(revision 8364)
+++ trunk/MagicSoft/Mars/mraw/MRawRunHeader.cc	(revision 8372)
@@ -343,4 +343,10 @@
     }
 
+    if (fRunNumber>=200000)
+    {
+        if (!SwapAssignment(428, 429))
+            return kFALSE;
+    }
+
     return kTRUE;
 }