diff --git a/open-reac/src/main/resources/openreac/commons.mod b/open-reac/src/main/resources/openreac/commons.mod
index 000a36a8..c871fc05 100644
--- a/open-reac/src/main/resources/openreac/commons.mod
+++ b/open-reac/src/main/resources/openreac/commons.mod
@@ -111,19 +111,19 @@ check {(qq,m,n) in ALL_BRANCHCC}: abs(branch_X_mod[qq,m,n]) > 0;
 
 # If in BRANCHZNULL, then set Gor/Gex/Bor/Bex to 0
 param branch_Gor_mod{(qq,m,n) in ALL_BRANCHCC} :=
-    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL then 0
+    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL and substation_Vnomi[1,bus_substation[1,m]] != substation_Vnomi[1,bus_substation[1,n]] then 0
     else branch_Gor[1,qq,m,n];
 
 param branch_Gex_mod{(qq,m,n) in ALL_BRANCHCC} :=
-    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL then 0
+    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL and substation_Vnomi[1,bus_substation[1,m]] != substation_Vnomi[1,bus_substation[1,n]] then 0
     else branch_Gex[1,qq,m,n];
 
 param branch_Bor_mod{(qq,m,n) in ALL_BRANCHCC} :=
-    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL then 0
+    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL and substation_Vnomi[1,bus_substation[1,m]] != substation_Vnomi[1,bus_substation[1,n]] then 0
     else branch_Bor[1,qq,m,n];
 
 param branch_Bex_mod{(qq,m,n) in ALL_BRANCHCC} :=
-    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL then 0
+    if (qq,m,n) in BRANCHCC and (qq,m,n) in BRANCHZNULL and substation_Vnomi[1,bus_substation[1,m]] != substation_Vnomi[1,bus_substation[1,n]] then 0
     else branch_Bex[1,qq,m,n];
 
 # Busses with valid voltage value
@@ -203,11 +203,11 @@ param branch_admi {(qq,m,n) in ALL_BRANCHCC} =
 
 # Later in this file, a variable branch_Ror_var will be created, to replace branch_Ror when it is not variable
 param branch_Ror {(qq,m,n) in ALL_BRANCHCC} =
-    ( if ((qq,m,n) in BRANCHCC_REGL)
+    ( if (branch_ptrRegl[1,qq,m,n] != -1)
       then tap_ratio[1,regl_table[1,branch_ptrRegl[1,qq,m,n]],regl_tap0[1,branch_ptrRegl[1,qq,m,n]]]
       else 1.0
     )
-  * ( if ((qq,m,n) in BRANCHCC_DEPH)
+  * ( if (branch_ptrDeph[1,qq,m,n] != -1)
       then tap_ratio[1,deph_table[1,branch_ptrDeph[1,qq,m,n]],deph_tap0[1,branch_ptrDeph[1,qq,m,n]]]
       else 1.0
     )
@@ -215,7 +215,7 @@ param branch_Ror {(qq,m,n) in ALL_BRANCHCC} =
 param branch_Rex {(q,m,n) in ALL_BRANCHCC} = 1; # In IIDM, everything is in bus1 so ratio at bus2 is always 1
 
 param branch_dephor {(qq,m,n) in ALL_BRANCHCC} =
-  if ((qq,m,n) in BRANCHCC_DEPH)
+  if (branch_ptrDeph[1,qq,m,n] != -1)
   then tap_angle [1,deph_table[1,branch_ptrDeph[1,qq,m,n]],deph_tap0[1,branch_ptrDeph[1,qq,m,n]]]
   else 0;
 param branch_dephex {(qq,m,n) in ALL_BRANCHCC} = 0; # In IIDM, everything is in bus1 so dephase at bus2 is always 0
diff --git a/open-reac/src/test/java/com/powsybl/openreac/optimization/AbstractOpenReacRunnerTest.java b/open-reac/src/test/java/com/powsybl/openreac/optimization/AbstractOpenReacRunnerTest.java
index d6fb60fe..fa0d1f38 100644
--- a/open-reac/src/test/java/com/powsybl/openreac/optimization/AbstractOpenReacRunnerTest.java
+++ b/open-reac/src/test/java/com/powsybl/openreac/optimization/AbstractOpenReacRunnerTest.java
@@ -12,7 +12,6 @@
 import com.powsybl.commons.test.ComparisonUtils;
 import com.powsybl.computation.ComputationManager;
 import com.powsybl.computation.local.LocalCommandExecutor;
-import com.powsybl.computation.local.LocalComputationConfig;
 import com.powsybl.computation.local.LocalComputationManager;
 import com.powsybl.iidm.network.*;
 import com.powsybl.loadflow.LoadFlow;
@@ -32,7 +31,6 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
-import java.util.concurrent.ForkJoinPool;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
@@ -135,9 +133,9 @@ protected OpenReacResult runOpenReac(Network network, String subFolder, OpenReac
         }
         LocalCommandExecutor localCommandExecutor = new TestLocalCommandExecutor(outputFileNames);
         // To really run open reac, use the commentede line below. Be sure that open-reac/src/test/resources/com/powsybl/config/test/config.yml contains your ampl path
-//        try (ComputationManager computationManager = new LocalComputationManager()) {
-        try (ComputationManager computationManager = new LocalComputationManager(new LocalComputationConfig(tmpDir),
-                localCommandExecutor, ForkJoinPool.commonPool())) {
+        try (ComputationManager computationManager = new LocalComputationManager()) {
+//        try (ComputationManager computationManager = new LocalComputationManager(new LocalComputationConfig(tmpDir),
+//                localCommandExecutor, ForkJoinPool.commonPool())) {
             return OpenReacRunner.run(network, network.getVariantManager().getWorkingVariantId(), parameters,
                     new OpenReacConfig(true), computationManager, reportNode, null);
         }