diff --git a/Control/AthenaCommon/python/AppMgr.py b/Control/AthenaCommon/python/AppMgr.py
index da5b9ac56618e92582a45619114f15062553e9ba..d660fa209a560c251772c83dd6237d0d21428106 100755
--- a/Control/AthenaCommon/python/AppMgr.py
+++ b/Control/AthenaCommon/python/AppMgr.py
@@ -24,7 +24,6 @@ __all__ = [ 'theApp', 'ServiceMgr', 'ToolSvc', 'AuditorSvc', 'theAuditorSvc',
             'athCondSeq',
             'athAlgSeq',    'topSequence',
             'athOutSeq',
-            'athRegSeq',
             ]
 
 ### helpers ------------------------------------------------------------------
@@ -263,7 +262,7 @@ class AthAppMgr( AppMgr ):
 
    def __build_master_sequence (self):
       """helper method to build the top-level AthSequencer from all bits and
-         pieces : AthMasterSeq, AthAlgSeq, AthOutSeq, AthRegSeq
+         pieces : AthMasterSeq, AthAlgSeq, AthOutSeq
       """
       from . import AlgSequence as _as
       from AthenaServices.AthenaServicesConf import AthIncFirerAlg as IFA
@@ -277,7 +276,6 @@ class AthAppMgr( AppMgr ):
          athAlgSeq    = _as.AthSequencer ("AthAlgSeq",IgnoreFilterPassed=True, StopOverride=True)
          athEndSeq    = _as.AthSequencer ("AthEndSeq",Sequential=True)
          athOutSeq    = _as.AthSequencer ("AthOutSeq", StopOverride=True)
-         athRegSeq    = _as.AthSequencer ("AthRegSeq", StopOverride=True)
          athAllAlgSeq = _as.AthSequencer ("AthAllAlgSeq", StopOverride=True)
          athAlgEvtSeq = _as.AthSequencer ("AthAlgEvtSeq",Sequential = True, StopOverride=True)
          # transfer old TopAlg to new AthAlgSeq
@@ -337,7 +335,6 @@ class AthAppMgr( AppMgr ):
 
          athMasterSeq += athAlgEvtSeq
          athMasterSeq += athOutSeq
-         athMasterSeq += athRegSeq
          
          Logging.log.debug ("building master sequence... [done]")
          return athMasterSeq
@@ -998,12 +995,9 @@ def AuditorSvc():             # backwards compatibility
 #                 +--- athEndSeq
 #         |
 #         +--- athOutSeq
-#         |
-#         +--- athRegSeq
 athMasterSeq = AlgSequence.AthSequencer( "AthMasterSeq" )
 athCondSeq   = AlgSequence.AthSequencer( "AthCondSeq" )
 athAlgSeq    = AlgSequence.AthSequencer( "AthAlgSeq" )
 athOutSeq    = AlgSequence.AthSequencer( "AthOutSeq" )
-athRegSeq    = AlgSequence.AthSequencer( "AthRegSeq" )
 
 topSequence  = AlgSequence.AlgSequence( "TopAlg" )     # for backward compatibility
diff --git a/Control/AthenaCommon/python/ConfigurationShelve.py b/Control/AthenaCommon/python/ConfigurationShelve.py
index 461bd058add0e3f00991a9cbbaf6631d55d3da8b..c085893405c43866b299fef51d9979cef14bf182 100644
--- a/Control/AthenaCommon/python/ConfigurationShelve.py
+++ b/Control/AthenaCommon/python/ConfigurationShelve.py
@@ -110,7 +110,6 @@ class ConfigurationJar( object ):
       self.TopSequence  = _as.AlgSequence  ("TopAlg")
       self.athAlgSeq    = _as.AthSequencer ("AthAlgSeq")
       self.athOutSeq    = _as.AthSequencer ("AthOutSeq")
-      self.athRegSeq    = _as.AthSequencer ("AthRegSeq")
       
       self.AppMgr      = theApp
       self.ServiceMgr  = ServiceMgr     # takes care of AuditorSvc & ToolSvc
@@ -131,7 +130,6 @@ class ConfigurationJar( object ):
       d[ 'AthAlgSeq' ]     = self.athAlgSeq
       d[ 'TopSequence' ]   = self.TopSequence
       d[ 'AthOutSeq' ]     = self.athOutSeq
-      d[ 'AthRegSeq' ]     = self.athRegSeq
       d[ 'AppMgr' ]        = self.AppMgr
       d[ 'Streams' ]       = self.AppMgr._streams
       d[ 'ServiceMgr' ]    = self.ServiceMgr #takes care of {Auditor,Tool}Svc
diff --git a/Control/AthenaCommon/share/GenerateBootstrapTest.ref b/Control/AthenaCommon/share/GenerateBootstrapTest.ref
index f192f34d09382e00b8e561e48cd3151e65c84a56..1cd0c9012f0dd68ab8c6661b93e3caea1f74e567 100644
--- a/Control/AthenaCommon/share/GenerateBootstrapTest.ref
+++ b/Control/AthenaCommon/share/GenerateBootstrapTest.ref
@@ -1,16 +1,16 @@
 Willing to acquire file bootstrap.pkl from
-/build/mnowak/work/sealsvc/build/x86_64-centos7-gcc8-opt/share/bootstrap.pkl
+/afs/cern.ch/work/s/smh/ol_reggie/bld/x86_64-centos7-gcc8-opt/share/bootstrap.pkl
 copy bootstrap.pkl
 ... Read 2 items from python pickle file:  bootstrap.pkl
 ... Read 2 items from python pickle file:  bootstrap_test.pkl
 Given list of size 0. Not looking for differences.
-Step 1: reference file #components: 27
-Step 2: file to check  #components: 27
+Step 1: reference file #components: 26
+Step 2: file to check  #components: 26
 Willing to acquire file bootstrap_threaded.pkl from
-/build/mnowak/work/sealsvc/build/x86_64-centos7-gcc8-opt/share/bootstrap_threaded.pkl
+/afs/cern.ch/work/s/smh/ol_reggie/bld/x86_64-centos7-gcc8-opt/share/bootstrap_threaded.pkl
 copy bootstrap_threaded.pkl
 ... Read 2 items from python pickle file:  bootstrap_threaded.pkl
 ... Read 2 items from python pickle file:  bootstrap_threaded_test.pkl
 Given list of size 0. Not looking for differences.
-Step 1: reference file #components: 33
-Step 2: file to check  #components: 33
+Step 1: reference file #components: 32
+Step 2: file to check  #components: 32
diff --git a/Control/AthenaCommon/share/bootstrap.pkl b/Control/AthenaCommon/share/bootstrap.pkl
index 23d4121dede4e14939bf33368f9ffaa649d061fa..9d0a62a3c8c83576c960da1216fa5c949f61049e 100644
Binary files a/Control/AthenaCommon/share/bootstrap.pkl and b/Control/AthenaCommon/share/bootstrap.pkl differ
diff --git a/Control/AthenaCommon/share/bootstrap_threaded.pkl b/Control/AthenaCommon/share/bootstrap_threaded.pkl
index 5792db164840bfecbd343f40b20fc39d7a21d99c..ee1df78d440815e71084f1de77bca9a882d77373 100644
Binary files a/Control/AthenaCommon/share/bootstrap_threaded.pkl and b/Control/AthenaCommon/share/bootstrap_threaded.pkl differ
diff --git a/Control/AthenaConfiguration/python/ComponentAccumulator.py b/Control/AthenaConfiguration/python/ComponentAccumulator.py
index a6cff972939920241b535b2bd4f4be43ee07f71d..a3ffde4ec5fc150a47c96df5bf3e154ee7e46e59 100644
--- a/Control/AthenaConfiguration/python/ComponentAccumulator.py
+++ b/Control/AthenaConfiguration/python/ComponentAccumulator.py
@@ -1066,7 +1066,6 @@ def appendCAtoAthena(ca):
 
 
     preconfigured = [athCondSeq,athOutSeq,athAlgSeq,topSequence]
-    #preconfigured = ["AthMasterSeq", "AthCondSeq", "AthAlgSeq", "AthOutSeq", "AthRegSeq"]
 
     for seq in ca._allSequences:
         merged = False
diff --git a/Control/AthenaConfiguration/python/MainServicesConfig.py b/Control/AthenaConfiguration/python/MainServicesConfig.py
index 9a9d69b62a55c9f4962ba4218e7b19cbdbc5d6e8..83dacda189f67aef1707a73d0d4c495089d34ae9 100644
--- a/Control/AthenaConfiguration/python/MainServicesConfig.py
+++ b/Control/AthenaConfiguration/python/MainServicesConfig.py
@@ -39,7 +39,6 @@ def MainServicesCfg(cfgFlags):
     #Build standard sequences:
     cfg.addSequence(AthSequencer('AthAlgEvtSeq',Sequential=True, StopOverride=True),parentName="AthMasterSeq") 
     cfg.addSequence(AthSequencer('AthOutSeq',StopOverride=True),parentName="AthMasterSeq")
-    cfg.addSequence(AthSequencer('AthRegSeq',StopOverride=True),parentName="AthMasterSeq")
 
     cfg.addSequence(AthSequencer('AthBeginSeq',Sequential=True),parentName='AthAlgEvtSeq')
     cfg.addSequence(AthSequencer('AthAllAlgSeq',StopOverride=True),parentName='AthAlgEvtSeq')