upgrade to latest compare reference
diff --git a/releng/maps/build.cfg b/releng/maps/build.cfg
index 9dbec24..2c5ba5c 100644
--- a/releng/maps/build.cfg
+++ b/releng/maps/build.cfg
@@ -47,8 +47,8 @@
 # arguments for relent tests (that vary by stream)
 qualifierArgValue=-countQualifierIncreaseOnlyAsError
 #qualifierArgValue=
-referenceIDArgValue=R-3.1-20090616035105
-referenceURLArgValue=http://archive.eclipse.org/webtools/downloads/drops/R3.1/R-3.1-20090616035105/versioningReference_R-3.1-20090616035105.xml
+referenceIDArgValue=M-3.1M-20090728234407
+referenceURLArgValue=http://archive.eclipse.org/webtools/downloads/drops/M-3.1M-20090728234407/versioningReference_M-3.1M-20090728234407.xml
 # omit to not test
 testToReferenceArgValue=-testToReference
 # omit to not list