diff --git a/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx b/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx
index be921fe6ab8f4905c031383a3584701c1f0c02d5..a9b3eae903f941b1867ac5764008e027e10f7a7e 100644
--- a/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx
+++ b/Trigger/TrigConfiguration/TrigConfigSvc/src/HLTConfigSvc.cxx
@@ -177,6 +177,7 @@ HLTConfigSvc::initialize() {
       dummyChains["HLT_2mu6_L12MU6"] = "L1_2MU6";
       dummyChains["HLT_2mu6Comb_L12MU6"] = "L1_2MU6";
       dummyChains["HLT_2mu6_bJpsimumu_L12MU6"] = "L1_2MU6";
+      dummyChains["HLT_2mu6_10invm70_L1MU6"] = "L1_2MU6";
       dummyChains["HLT_3j200_L1J20"] = "L1_J20";
       dummyChains["HLT_5j70_0eta240_L14J20"] = "L1_4J20";
       dummyChains["HLT_e3_etcut1step_mu6fast_L1EM8I_MU10"] = "L1_EM8I_MU10";
diff --git a/Trigger/TrigHypothesis/TrigMuonHypoMT/src/TrigMuonEFInvMassHypoAlg.cxx b/Trigger/TrigHypothesis/TrigMuonHypoMT/src/TrigMuonEFInvMassHypoAlg.cxx
index 44750b2747783b42d282d71b1b9e10bf43a45c99..4dc0033af3078abb1a344e0bb6e67b1d261d81eb 100755
--- a/Trigger/TrigHypothesis/TrigMuonHypoMT/src/TrigMuonEFInvMassHypoAlg.cxx
+++ b/Trigger/TrigHypothesis/TrigMuonHypoMT/src/TrigMuonEFInvMassHypoAlg.cxx
@@ -80,7 +80,7 @@ StatusCode TrigMuonEFInvMassHypoAlg::execute( const EventContext& context ) cons
     ATH_MSG_DEBUG( "Muinfo handle size: " << muonHandle->size() << " ..." );
 
     // It is posisble that no muons are found, in this case we go to the next decision
-    if(muonHandle->size()<2) continue;
+    if(muonHandle->size()<1) continue;
     muonDec.first = muonHandle.ptr();
     muonDec.second = previousDecision;
     vecMuDec.push_back(muonDec);
@@ -109,7 +109,7 @@ StatusCode TrigMuonEFInvMassHypoAlg::execute( const EventContext& context ) cons
 	  const ElementLink<xAOD::MuonContainer> muonEL1 = ElementLink<xAOD::MuonContainer>( *muonCont1, mu1->index() );
 	  const ElementLink<xAOD::MuonContainer> muonEL2 = ElementLink<xAOD::MuonContainer>( *muonCont2, mu2->index() );
 	  newd -> setObjectLink( featureString(), muonEL1 );
-	  newd -> setObjectLink( featureString(), muonEL2 );
+	  newd -> setObjectLink( "secondFeature", muonEL2 );
 	  TrigCompositeUtils::linkToPrevious( newd, dec1, context );
 	  TrigCompositeUtils::linkToPrevious( newd, dec2, context );
 
diff --git a/Trigger/TrigValidation/TrigAnalysisTest/share/q221_RDOtoRDOTrig_mt1_build.ref b/Trigger/TrigValidation/TrigAnalysisTest/share/q221_RDOtoRDOTrig_mt1_build.ref
index dc3398f615b5318c2e299a7b27f03c06ffeab742..f0bb9b04b5e02cf35957f3689eda3f6250b2a416 100644
--- a/Trigger/TrigValidation/TrigAnalysisTest/share/q221_RDOtoRDOTrig_mt1_build.ref
+++ b/Trigger/TrigValidation/TrigAnalysisTest/share/q221_RDOtoRDOTrig_mt1_build.ref
@@ -6,14 +6,12 @@ TrigSignatureMoniMT                                INFO HLT_2g35_etcut_L12EM20VH
 TrigSignatureMoniMT                                INFO HLT_2g35_etcut_L12EM20VH decisions                    5         5         2         0         0
 TrigSignatureMoniMT                                INFO HLT_2j330_a10t_lcw_jes_35smcINF_L1J1004         4         0         0         0         0         0         0
 TrigSignatureMoniMT                                INFO HLT_2j330_a10t_lcw_jes_35smcINF_L1J100 decisions                    0         0         0         0         0
-TrigSignatureMoniMT                                INFO HLT_2mu10_bJpsimumu_L12MU10   3         3         3         0         0         0         0         0
-TrigSignatureMoniMT                                INFO HLT_2mu10_bJpsimumu_L12MU10 decisions                    18        0         0         0         0
-TrigSignatureMoniMT                                INFO HLT_2mu10_bUpsimumu_L12MU10   3         3         3         0         0         0         0         0
-TrigSignatureMoniMT                                INFO HLT_2mu10_bUpsimumu_L12MU10 decisions                    18        0         0         0         0
 TrigSignatureMoniMT                                INFO HLT_2mu14_L12MU10             3         3         3         1         1         1         0         1
 TrigSignatureMoniMT                                INFO HLT_2mu14_L12MU10 decisions                       18        6         4         4         0
 TrigSignatureMoniMT                                INFO HLT_2mu6Comb_L12MU6           4         4         4         1         0         0         0         1
 TrigSignatureMoniMT                                INFO HLT_2mu6Comb_L12MU6 decisions                     24        6         0         0         0
+TrigSignatureMoniMT                                INFO HLT_2mu6_10invm70_L1MU6       10        10        4         1         1         1         1         1
+TrigSignatureMoniMT                                INFO HLT_2mu6_10invm70_L1MU6 decisions                    24        6         4         4         1
 TrigSignatureMoniMT                                INFO HLT_2mu6_L12MU6               4         4         4         1         1         1         0         1
 TrigSignatureMoniMT                                INFO HLT_2mu6_L12MU6 decisions                         24        6         4         4         0
 TrigSignatureMoniMT                                INFO HLT_3j200_L1J100              4         4         0         0         0         0         0         0
diff --git a/Trigger/TrigValidation/TrigUpgradeTest/share/full_menu_build.ref b/Trigger/TrigValidation/TrigUpgradeTest/share/full_menu_build.ref
index 90510a37f77c2ea0b316ebe2e74b3381e04a667b..0cd9136a7f559158f51bd9c942c8d3e45233a847 100644
--- a/Trigger/TrigValidation/TrigUpgradeTest/share/full_menu_build.ref
+++ b/Trigger/TrigValidation/TrigUpgradeTest/share/full_menu_build.ref
@@ -502,6 +502,8 @@ TrigSignatureMoniMT                                INFO HLT_2mu14_L12MU10
 TrigSignatureMoniMT                                INFO HLT_2mu14_L12MU10 decisions                       0         0         0         0         0         
 TrigSignatureMoniMT                                INFO HLT_2mu6Comb_L12MU6           20        20        0         0         0         0         0         0         
 TrigSignatureMoniMT                                INFO HLT_2mu6Comb_L12MU6 decisions                     0         0         0         0         0         
+TrigSignatureMoniMT                                INFO HLT_2mu6_10invm70_L1MU6       20        20        0         0         0         0         0         0         
+TrigSignatureMoniMT                                INFO HLT_2mu6_10invm70_L1MU6 decisions                    0         0         0         0         0         
 TrigSignatureMoniMT                                INFO HLT_2mu6_L12MU6               20        20        0         0         0         0         0         0         
 TrigSignatureMoniMT                                INFO HLT_2mu6_L12MU6 decisions                         0         0         0         0         0         
 TrigSignatureMoniMT                                INFO HLT_3j200_L1J100              20        20        0         0         0         0         0         0         
diff --git a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/LS2_v1.py b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/LS2_v1.py
index 78584658f5f365f455dc6a1fda107c22668f230b..f1b82b968a686e9cff24a2d43f516aba2abc5fa3 100644
--- a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/LS2_v1.py
+++ b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Menu/LS2_v1.py
@@ -55,6 +55,8 @@ def setupMenu():
         ChainProp(name='HLT_mu6noL1_L1MU6', l1SeedThresholds=[''], groups=SingleMuonGroup),
         ChainProp(name='HLT_mu6_msonly_L1MU6',     groups=SingleMuonGroup),
 
+        ChainProp(name='HLT_2mu6_10invm70_L1MU6', groups=SingleMuonGroup),
+
         # ATR-20049
         ChainProp(name='HLT_mu26_ivarmedium_L1MU20', groups=SingleMuonGroup),
         ChainProp(name='HLT_mu50_L1MU20', groups=SingleMuonGroup),
diff --git a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonDef.py b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonDef.py
index 5c87cc5fefb979dacb59228e082007c8689b83a8..8559a8cda5c5939333eb9b45d822a95c6ea94e50 100755
--- a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonDef.py
+++ b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonDef.py
@@ -9,9 +9,10 @@ from AthenaCommon.Logging import logging
 logging.getLogger().info("Importing %s",__name__)
 log = logging.getLogger("TriggerMenuMT.HLTMenuConfig.Muon.MuonDef")
 
-from TriggerMenuMT.HLTMenuConfig.Menu.ChainConfigurationBase import ChainConfigurationBase
+from TriggerMenuMT.HLTMenuConfig.Menu.ChainConfigurationBase import ChainConfigurationBase, RecoFragmentsPool
+from TriggerMenuMT.HLTMenuConfig.Menu.MenuComponents import ChainStep
 
-from TriggerMenuMT.HLTMenuConfig.Muon.MuonSequenceSetup import muFastSequence, muFastOvlpRmSequence, muCombSequence, muCombOvlpRmSequence, muEFMSSequence, muEFSASequence, muIsoSequence, muEFCBSequence, muEFSAFSSequence, muEFCBFSSequence, muEFIsoSequence, muEFCBInvMassSequence, muEFCBInvMassFSSequence
+from TriggerMenuMT.HLTMenuConfig.Muon.MuonSequenceSetup import muFastSequence, muFastOvlpRmSequence, muCombSequence, muCombOvlpRmSequence, muEFMSSequence, muEFSASequence, muIsoSequence, muEFCBSequence, muEFSAFSSequence, muEFCBFSSequence, muEFIsoSequence, muEFCBInvMassSequence
 
 
 
@@ -51,9 +52,6 @@ def FSmuEFSASequenceCfg(flags):
 def FSmuEFCBSequenceCfg(flags):
     return muEFCBFSSequence()
 
-def FSmuEFCBInvMSequenceCfg(flags):
-    return muEFCBInvMassFSSequence()
-
 def muEFIsoSequenceCfg(flags):
     return muEFIsoSequence()
 
@@ -84,6 +82,12 @@ class MuonChainConfiguration(ChainConfigurationBase):
             for step in step_level:
                 chainSteps+=[step]
     
+        if 'invm' in self.chainPart['invMassInfo']:
+            steps=stepDictionary['invM']
+            for step_level in steps:
+                for step in step_level:
+                    chainSteps+=[step]
+
         myChain = self.buildChain(chainSteps)
         return myChain
 
@@ -107,6 +111,7 @@ class MuonChainConfiguration(ChainConfigurationBase):
             "noL1":[[],[self.getFSmuEFSA(), self.getFSmuEFCB()]],
             "msonly":[[self.getmuFast(), self.getmuMSEmpty(1)], [self.getmuEFMS()]],
             "ivarmedium":[[self.getmuFast(), self.getmuComb()], [self.getmuEFSA(), self.getmuEFCB(), self.getmuEFIso()]],
+            "invM":[[],[self.getmuInvM()]],
         }
        
         return stepDictionary
@@ -160,10 +165,7 @@ class MuonChainConfiguration(ChainConfigurationBase):
 
     # --------------------
     def getmuEFCB(self):
-        if 'invm' in self.chainPart['invMassInfo']:
-            return self.getStep(4,'EFCBinvM', [muEFCBInvMSequenceCfg])
-        else:
-            return self.getStep(4,'EFCB', [muEFCBSequenceCfg])
+        return self.getStep(4,'EFCB', [muEFCBSequenceCfg])
  
     # --------------------
     def getFSmuEFSA(self):
@@ -171,10 +173,7 @@ class MuonChainConfiguration(ChainConfigurationBase):
 
     # --------------------
     def getFSmuEFCB(self):
-        if 'invm' in self.chainPart['invMassInfo']:
-            return self.getStep(2,'FSmuEFCB', [FSmuEFCBInvMSequenceCfg])
-        else:
-            return self.getStep(2,'FSmuEFCB', [FSmuEFCBSequenceCfg])
+        return self.getStep(2,'FSmuEFCB', [FSmuEFCBSequenceCfg])
 
     #---------------------
     def getmuEFIso(self):
@@ -184,4 +183,11 @@ class MuonChainConfiguration(ChainConfigurationBase):
     def getmuMSEmpty(self, stepID):
         return self.getStep(stepID,'muMS_empty',[])
 
+    #--------------------
+    def getmuInvM(self):
+        stepName = 'Step5_muInvM'
+        log.debug("Configuring step " + stepName)
+        seq = RecoFragmentsPool.retrieve( muEFCBInvMSequenceCfg, None)
+        return ChainStep(stepName, [seq], multiplicity=1)
+
 
diff --git a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonSequenceSetup.py b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonSequenceSetup.py
index f64c2416421bcb50c07b1d29b8a7060e06967ba3..4a82299f38bf6f5d4ce6bf6647bcd6bc01a7ead8 100644
--- a/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonSequenceSetup.py
+++ b/Trigger/TriggerCommon/TriggerMenuMT/python/HLTMenuConfig/Muon/MuonSequenceSetup.py
@@ -295,21 +295,32 @@ def muEFCBSequence():
 ########################
 def muEFCBInvMassSequence():
 
-    (muonEFCBSequence, efcbViewsMaker, sequenceOut) = RecoFragmentsPool.retrieve(muEFCBAlgSequence, ConfigFlags)
-
-    # setup EFCB hypo
-    from TrigMuonHypoMT.TrigMuonHypoMTConfig import TrigMuonEFCombinerHypoAlg, TrigMuonEFInvMassHypoAlg, TrigMuonEFInvMassHypoToolFromDict
-    trigMuonEFCBHypo = TrigMuonEFCombinerHypoAlg( "TrigMuonEFCombinerInvMHypoAlg" )
-    trigMuonEFCBHypo.MuonDecisions = sequenceOut
+    from AthenaCommon import CfgMgr
+    invMassRecoSequence = parOR("muInvMViewNode")
     
-    from TrigMuonHypoMT.TrigMuonHypoMTConfig import TrigMuonEFCombinerHypoToolFromDict
+    invMViewsMaker = EventViewCreatorAlgorithm("IMmuinvm")
+    invMViewsMaker.ViewFallThrough = True
+    invMViewsMaker.RoIsLink = "initialRoI" # -||-
+    invMViewsMaker.InViewRoIs = "muInvMRoIs" # contract with the consumer
+    invMViewsMaker.Views = "muInvMViewRoIs"
+    invMViewsMaker.ViewNodeName = invMassRecoSequence.name()
+    invMViewsMaker.RequireParentView = True
+   
+    
+    ViewVerifyEFCB = CfgMgr.AthViews__ViewDataVerifier("muInvMViewDataVerifier")
+    ViewVerifyEFCB.DataObjects = [( 'xAOD::MuonContainer' , 'StoreGateSvc+'+muNames.EFCBName )]
+    invMassRecoSequence += ViewVerifyEFCB
+    invMassSequence = seqAND( "muInvMSequence", [invMViewsMaker, invMassRecoSequence] )
+
+
+    from TrigMuonHypoMT.TrigMuonHypoMTConfig import TrigMuonEFInvMassHypoAlg, TrigMuonEFInvMassHypoToolFromDict
 
     trigMuonEFInvMHypo = TrigMuonEFInvMassHypoAlg( "TrigMuonEFInvMassHypoAlg" )
-    trigMuonEFInvMHypo.MuonDecisions = sequenceOut
-    return MenuSequence( Sequence    = muonEFCBSequence,
-                         Maker       = efcbViewsMaker,
-                         Hypo        = [trigMuonEFCBHypo, trigMuonEFInvMHypo],
-                         HypoToolGen = [TrigMuonEFCombinerHypoToolFromDict, TrigMuonEFInvMassHypoToolFromDict] )
+    trigMuonEFInvMHypo.MuonDecisions = muNames.EFCBName
+    return MenuSequence( Sequence    = invMassSequence,
+                         Maker       = invMViewsMaker,
+                         Hypo        = trigMuonEFInvMHypo,
+                         HypoToolGen = TrigMuonEFInvMassHypoToolFromDict )
 
 ######################
 ### EF SA full scan ###
@@ -389,29 +400,6 @@ def muEFCBFSSequence():
                          HypoToolGen = TrigMuonEFCombinerHypoToolFromDict )
 
 
-######################
-### EF CB FS with   ##
-### dimuon mass cut ##
-######################
-                   
-def muEFCBInvMassFSSequence():
-
-    (muonEFCBFSSequence, efcbfsInputMaker, sequenceOut) = RecoFragmentsPool.retrieve(muEFCBFSAlgSequence, ConfigFlags)
-
-    # setup EFCB hypo
-    from TrigMuonHypoMT.TrigMuonHypoMTConfig import TrigMuonEFCombinerHypoAlg, TrigMuonEFInvMassHypoAlg, TrigMuonEFInvMassHypoToolFromDict
-    trigMuonEFCBFSHypo = TrigMuonEFCombinerHypoAlg( "TrigMuonEFFSCombinerInvMHypoAlg" )
-    trigMuonEFCBFSHypo.MuonDecisions = sequenceOut
-
-    from TrigMuonHypoMT.TrigMuonHypoMTConfig import TrigMuonEFCombinerHypoToolFromDict
-
-    trigMuonEFInvMHypo = TrigMuonEFInvMassHypoAlg( "TrigMuonEFFSInvMassHypoAlg" )
-    trigMuonEFInvMHypo.MuonDecisions = sequenceOut
-
-    return MenuSequence( Sequence    = muonEFCBFSSequence,
-                         Maker       = efcbfsInputMaker,
-                         Hypo        = [trigMuonEFCBFSHypo, trigMuonEFInvMHypo],
-                         HypoToolGen = [TrigMuonEFCombinerHypoToolFromDict, TrigMuonEFInvMassHypoToolFromDict] )
 
 
 ######################