diff --git a/Code/Mantid/Framework/DataHandling/src/LoadDAE.cpp b/Code/Mantid/Framework/DataHandling/src/LoadDAE.cpp
index 1b3fb27e0c97ddbfd5f518d8d64e048a7cb838be..59eafd9d9c22d731d25e2c52b0143d4f259bb662 100644
--- a/Code/Mantid/Framework/DataHandling/src/LoadDAE.cpp
+++ b/Code/Mantid/Framework/DataHandling/src/LoadDAE.cpp
@@ -479,6 +479,7 @@ namespace Mantid
       {
         loadInst->setPropertyValue("InstrumentName", instrumentID);
         loadInst->setProperty<MatrixWorkspace_sptr>("Workspace",localWorkspace);
+        loadInst->setProperty("RewriteSpectraMap", false);
         loadInst->execute();
       }
       catch(std::invalid_argument &)