diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_oneThread.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_oneThread.sh
index 21e6efe8532f4e58c28dcaae6fa767ebab0a1825..fcea3c6756d5fd4b689ee7c0dce5f802ac797b7b 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_oneThread.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_oneThread.sh
@@ -3,7 +3,6 @@
 # art-description: Athena runs topoclustering from an ESD file
 # art-type: grid
 # art-include: master/Athena
-# art-athena-mt: 4
 
 art.py createpoolfile
 
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_twoThreads.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_twoThreads.sh
index 4a1da4466c8a4397b9f6ad2b1f86acc02050d2a6..d6b9746f199ca1b18cf94e5168810848a9bb7937 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_twoThreads.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_calotopoclustering_fromesd_MT_twoThreads.sh
@@ -5,6 +5,8 @@
 # art-include: master/Athena
 # art-athena-mt: 4
 
+unset ATHENA_PROC_NUMBER
+    
 art.py createpoolfile
 
 athena --threads=2 RecExRecoTest/RecExRecoTest_ART_caloTopoClustering_fromESD.py
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_oneThread.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_oneThread.sh
index 260a146d6a09b79c8a4dfe5601dc5d251fd59d1f..9b11b203fb76412baef3a4d1f16e590a1a447711 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_oneThread.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_oneThread.sh
@@ -3,7 +3,6 @@
 # art-description: Athena runs topoclustering from an ESD file
 # art-type: grid
 # art-include: master/Athena
-# art-athena-mt: 4
 
 art.py createpoolfile
 
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_twoThreads.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_twoThreads.sh
index 349cfd6e955927490f6beed84075b4c6949aa2e1..9f3686950c335193bd7194c67f7c5e27b4f342b1 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_twoThreads.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_egamma_fromesd_MT_twoThreads.sh
@@ -5,6 +5,8 @@
 # art-include: master/Athena
 # art-athena-mt: 4
 
+unset ATHENA_PROC_NUMBER
+
 art.py createpoolfile
 
 athena --threads=2 RecExRecoTest/RecExRecoTest_ART_egamma_fromESD.py
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_oneThread.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_oneThread.sh
index 24c8459ce2cb41e8adad66ac602ea20550066707..4ce22b4edeaeef53db963468af93194b952a2aa9 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_oneThread.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_oneThread.sh
@@ -3,7 +3,6 @@
 # art-description: Athena runs topoclustering from an ESD file
 # art-type: grid
 # art-include: master/Athena
-# art-athena-mt: 4
 
 art.py createpoolfile
 
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_twoThreads.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_twoThreads.sh
index 178290f5a4f3f34f402b125823baf9479f88f614..ca546d2bb61a5601dcb69b86f15a0da3b3f6a738 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_twoThreads.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_muons_fromesd_MT_twoThreads.sh
@@ -5,6 +5,8 @@
 # art-include: master/Athena
 # art-athena-mt: 4
 
+unset ATHENA_PROC_NUMBER
+
 art.py createpoolfile
 
 athena --threads=2 RecExRecoTest/RecExRecoTest_ART_muons_fromESD.py
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_oneThread.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_oneThread.sh
index 343b0eaee15f3527ef51008d30bdd0f9b938cda2..e685c47f3de3ea2e8565c7b8d636d222ec18b19d 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_oneThread.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_oneThread.sh
@@ -3,7 +3,6 @@
 # art-description: Athena runs topoclustering from an ESD file
 # art-type: grid
 # art-include: master/Athena
-# art-athena-mt: 4
 
 art.py createpoolfile
 
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_twoThreads.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_twoThreads.sh
index 333167b40053084fbacaed100212e19383554fd3..7447dcbf7903b031262f568d6504c3336e16e69b 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_twoThreads.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_noalgs_fromesd_MT_twoThreads.sh
@@ -5,6 +5,8 @@
 # art-include: master/Athena
 # art-athena-mt: 4
 
+unset ATHENA_PROC_NUMBER
+
 art.py createpoolfile
 
 athena --threads=2 RecExRecoTest/RecExRecoTest_ART_noAlgs_fromESD.py
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_oneThread.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_oneThread.sh
index ad162dcd55e7735d57acbd4f874373e4fdb2ef15..ea9841a1cb26969cb40e11c360c225a7fe7eca34 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_oneThread.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_oneThread.sh
@@ -3,7 +3,6 @@
 # art-description: Athena runs topoclustering from an ESD file
 # art-type: grid
 # art-include: master/Athena
-# art-athena-mt: 4
 
 art.py createpoolfile
 
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_twoThreads.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_twoThreads.sh
index 6c22c48b59c7654b069ecfb6a113cf017d48e166..34caa74ae37eec19e748b9ae4647474053339762 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_twoThreads.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_pflow_and_jets_fromesd_MT_twoThreads.sh
@@ -5,6 +5,8 @@
 # art-include: master/Athena
 # art-athena-mt: 4
 
+unset ATHENA_PROC_NUMBER
+
 art.py createpoolfile
 
 athena --threads=2 eflowRec/run_ESDStandardReco.py
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_oneThread.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_oneThread.sh
index b09c070281986f653363164163dffacc5d202ec6..cccf1e3f13d14d53835b0dd45956f04a476be931 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_oneThread.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_oneThread.sh
@@ -3,7 +3,6 @@
 # art-description: Athena runs topoclustering from an ESD file
 # art-type: grid
 # art-include: master/Athena
-# art-athena-mt: 4
 
 art.py createpoolfile
 
diff --git a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_twoThreads.sh b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_twoThreads.sh
index 9e932f51c392010db46893425979e926316e2141..3a468ef3883cec1ac2969493543416e705f69db4 100755
--- a/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_twoThreads.sh
+++ b/Reconstruction/RecExample/RecExRecoTest/test/test_recexreco_art_tau_fromesd_MT_twoThreads.sh
@@ -5,6 +5,8 @@
 # art-include: master/Athena
 # art-athena-mt: 4
 
+unset ATHENA_PROC_NUMBER
+
 art.py createpoolfile
 
 athena --threads=2 tauRec/run_tau_standalone.py