diff --git a/incompressible_flow/Inc_Species_Transport/1__FFD-box-writing/species3_primitiveVenturi.cfg b/incompressible_flow/Inc_Species_Transport/1__FFD-box-writing/species3_primitiveVenturi.cfg
index 188aed9..721808d 100644
--- a/incompressible_flow/Inc_Species_Transport/1__FFD-box-writing/species3_primitiveVenturi.cfg
+++ b/incompressible_flow/Inc_Species_Transport/1__FFD-box-writing/species3_primitiveVenturi.cfg
@@ -50,7 +50,7 @@ INLET_FILENAME= inlet_venturi.dat
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( gas_inlet,       300, 1.0, 1.0,  0.0, 0.0,\
                 air_axial_inlet, 300, 1.0, 0.0, -1.0, 0.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= (gas_inlet,       0.5, 0.5,\
                        air_axial_inlet, 0.6, 0.0 )
 %
diff --git a/incompressible_flow/Inc_Species_Transport/2__mesh-deform-test/species3_primitiveVenturi_deform.cfg b/incompressible_flow/Inc_Species_Transport/2__mesh-deform-test/species3_primitiveVenturi_deform.cfg
index 97cd2fd..f90050f 100644
--- a/incompressible_flow/Inc_Species_Transport/2__mesh-deform-test/species3_primitiveVenturi_deform.cfg
+++ b/incompressible_flow/Inc_Species_Transport/2__mesh-deform-test/species3_primitiveVenturi_deform.cfg
@@ -51,7 +51,7 @@ INLET_FILENAME= inlet_venturi.dat
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( gas_inlet,       300, 1.0, 1.0,  0.0, 0.0,\
                 air_axial_inlet, 300, 1.0, 0.0, -1.0, 0.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= (gas_inlet,       0.5, 0.5,\
                        air_axial_inlet, 0.6, 0.0 )
 %
diff --git a/incompressible_flow/Inc_Species_Transport/3__gradient-validation/species3_primitiveVenturi.cfg b/incompressible_flow/Inc_Species_Transport/3__gradient-validation/species3_primitiveVenturi.cfg
index 735308c..3601908 100644
--- a/incompressible_flow/Inc_Species_Transport/3__gradient-validation/species3_primitiveVenturi.cfg
+++ b/incompressible_flow/Inc_Species_Transport/3__gradient-validation/species3_primitiveVenturi.cfg
@@ -54,7 +54,7 @@ INLET_FILENAME= inlet_venturi.dat
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( gas_inlet,       300, 1.0, 1.0,  0.0, 0.0,\
                 air_axial_inlet, 300, 1.0, 0.0, -1.0, 0.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= (gas_inlet,       0.5, 0.5,\
                        air_axial_inlet, 0.6, 0.0 )
 %
diff --git a/incompressible_flow/Inc_Species_Transport/4__optimization/species3_primitiveVenturi.cfg b/incompressible_flow/Inc_Species_Transport/4__optimization/species3_primitiveVenturi.cfg
index c4e6e1d..18d9e81 100644
--- a/incompressible_flow/Inc_Species_Transport/4__optimization/species3_primitiveVenturi.cfg
+++ b/incompressible_flow/Inc_Species_Transport/4__optimization/species3_primitiveVenturi.cfg
@@ -54,7 +54,7 @@ INLET_FILENAME= inlet_venturi.dat
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( gas_inlet,       300, 1.0, 1.0,  0.0, 0.0,\
                 air_axial_inlet, 300, 1.0, 0.0, -1.0, 0.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= (gas_inlet,       0.5, 0.5,\
                        air_axial_inlet, 0.6, 0.0 )
 %
diff --git a/incompressible_flow/Inc_Species_Transport/DAspecies3_primitiveVenturi.cfg b/incompressible_flow/Inc_Species_Transport/DAspecies3_primitiveVenturi.cfg
index 0e1c929..df25ad9 100644
--- a/incompressible_flow/Inc_Species_Transport/DAspecies3_primitiveVenturi.cfg
+++ b/incompressible_flow/Inc_Species_Transport/DAspecies3_primitiveVenturi.cfg
@@ -58,7 +58,7 @@ INLET_FILENAME= inlet_venturi.dat
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( gas_inlet,       300, 1.0, 1.0,  0.0, 0.0,\
                 air_axial_inlet, 300, 1.0, 0.0, -1.0, 0.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= (gas_inlet,       0.5, 0.5,\
                        air_axial_inlet, 0.6, 0.0 )
 %
diff --git a/incompressible_flow/Inc_Species_Transport/species3_primitiveVenturi.cfg b/incompressible_flow/Inc_Species_Transport/species3_primitiveVenturi.cfg
index c8137a9..753bd02 100644
--- a/incompressible_flow/Inc_Species_Transport/species3_primitiveVenturi.cfg
+++ b/incompressible_flow/Inc_Species_Transport/species3_primitiveVenturi.cfg
@@ -50,7 +50,7 @@ INLET_FILENAME= inlet_venturi.dat
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( gas_inlet,       300, 1.0, 1.0,  0.0, 0.0,\
                 air_axial_inlet, 300, 1.0, 0.0, -1.0, 0.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= (gas_inlet,       0.5, 0.5,\
                        air_axial_inlet, 0.6, 0.0 )
 %
diff --git a/incompressible_flow/Inc_Species_Transport_Composition_Dependent_Model/kenics_mixer_tutorial.cfg b/incompressible_flow/Inc_Species_Transport_Composition_Dependent_Model/kenics_mixer_tutorial.cfg
index 06bc801..106fe08 100644
--- a/incompressible_flow/Inc_Species_Transport_Composition_Dependent_Model/kenics_mixer_tutorial.cfg
+++ b/incompressible_flow/Inc_Species_Transport_Composition_Dependent_Model/kenics_mixer_tutorial.cfg
@@ -60,7 +60,7 @@ SPECIFIED_INLET_PROFILE= NO
 %
 INC_INLET_TYPE=  VELOCITY_INLET VELOCITY_INLET
 MARKER_INLET= ( inlet_gas, 300, 5.0, 0.0,  0.0, 1.0, inlet_air, 300, 5.0, 0.0, 0.0, 1.0 )
-SPECIES_USE_STRONG_BC= NO
+
 MARKER_INLET_SPECIES= ( inlet_gas, 1.0, inlet_air, 0.0 )
 %
 MARKER_INLET_TURBULENT= ( inlet_gas, 0.05, 10, inlet_air, 0.05, 10 )