diff --git a/tests/pac/trend-component-1/example.mod b/tests/pac/trend-component-1/example.mod
index 83a2a742c..c53a96203 100644
--- a/tests/pac/trend-component-1/example.mod
+++ b/tests/pac/trend-component-1/example.mod
@@ -34,16 +34,16 @@ pac_model(auxiliary_model_name=toto, discount=beta, model_name=pacman);
 
 model;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='eq:pac']
diff --git a/tests/pac/trend-component-10/example.mod b/tests/pac/trend-component-10/example.mod
index cc5e22608..d1e12cef9 100644
--- a/tests/pac/trend-component-10/example.mod
+++ b/tests/pac/trend-component-10/example.mod
@@ -39,16 +39,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(log(x1)) = a_x1_0*(log(x1(-1))-x1bar(-1)) + a_x1_1*diff(log(x1(-1))) + a_x1_2*diff(log(x1(-2))) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(log(x1(-1))) + a_x2_2*diff(log(x1(-2))) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-11/example.mod b/tests/pac/trend-component-11/example.mod
index 859d08b34..28095291e 100644
--- a/tests/pac/trend-component-11/example.mod
+++ b/tests/pac/trend-component-11/example.mod
@@ -34,16 +34,16 @@ pac_model(auxiliary_model_name=toto, discount=beta, model_name=pacman);
 
 model;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(diff(log(x1))) = a_x1_0*(diff(log(x1(-1)))-x1bar(-1)) + a_x1_1*diff(diff(log(x1(-1)))) + a_x1_2*diff(diff(x1(-2))) + a_x1_x2_1*diff(log(x2(-1))) + a_x1_x2_2*diff(log(x2(-2))) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(log(x2)) = a_x2_0*(log(x2(-1))-x2bar(-1)) + a_x2_1*diff(diff(log(x1(-1)))) + a_x2_2*diff(diff(log(x1(-2)))) + a_x2_x1_1*diff(log(x2(-1))) + a_x2_x1_2*diff(log(x2(-2))) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='eq:pac']
diff --git a/tests/pac/trend-component-12/example.mod b/tests/pac/trend-component-12/example.mod
index 4635ef1c6..f0749985f 100644
--- a/tests/pac/trend-component-12/example.mod
+++ b/tests/pac/trend-component-12/example.mod
@@ -39,16 +39,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-13a/example.mod b/tests/pac/trend-component-13a/example.mod
index 246c96fdd..42dceb04d 100644
--- a/tests/pac/trend-component-13a/example.mod
+++ b/tests/pac/trend-component-13a/example.mod
@@ -39,16 +39,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-13b/example.mod b/tests/pac/trend-component-13b/example.mod
index effe143df..fbda407f5 100644
--- a/tests/pac/trend-component-13b/example.mod
+++ b/tests/pac/trend-component-13b/example.mod
@@ -39,16 +39,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-14/example.mod b/tests/pac/trend-component-14/example.mod
index 09919248c..4d2068cc7 100644
--- a/tests/pac/trend-component-14/example.mod
+++ b/tests/pac/trend-component-14/example.mod
@@ -39,16 +39,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-14/substitution.mod b/tests/pac/trend-component-14/substitution.mod
index db5d12cd7..a7af11ac3 100644
--- a/tests/pac/trend-component-14/substitution.mod
+++ b/tests/pac/trend-component-14/substitution.mod
@@ -37,16 +37,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-2/example.mod b/tests/pac/trend-component-2/example.mod
index 33dc04512..c1029d742 100644
--- a/tests/pac/trend-component-2/example.mod
+++ b/tests/pac/trend-component-2/example.mod
@@ -34,16 +34,16 @@ pac_model(auxiliary_model_name=toto, discount=beta, model_name=pacman);
 
 model;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(diff(x1)) = a_x1_0*(diff(x1(-1))-diff(x1bar(-1))) + a_x1_1*diff(diff(x1(-1))) + a_x1_2*diff(diff(x1(-2))) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(diff(x1(-1))) + a_x2_2*diff(diff(x1(-2))) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 diff(x1bar) = diff(x1bar(-1)) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='eq:pac']
diff --git a/tests/pac/trend-component-3/example.mod b/tests/pac/trend-component-3/example.mod
index c05f9054f..137813d61 100644
--- a/tests/pac/trend-component-3/example.mod
+++ b/tests/pac/trend-component-3/example.mod
@@ -34,16 +34,16 @@ pac_model(auxiliary_model_name=toto, discount=beta, model_name=pacman);
 
 model;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(diff(x1)) = a_x1_0*(diff(x1(-1))-diff(x1bar(-1))) + a_x1_1*diff(diff(x1(-1))) + a_x1_2*diff(diff(x1(-2))) + a_x1_x2_1*diff(log(x2(-1))) + a_x1_x2_2*diff(log(x2(-2))) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(log(x2)) = a_x2_0*(log(x2(-1))-log(x2bar(-1))) + a_x2_1*diff(diff(x1(-1))) + a_x2_2*diff(diff(x1(-2))) + a_x2_x1_1*diff(log(x2(-1))) + a_x2_x1_2*diff(log(x2(-2))) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 diff(x1bar) = diff(x1bar(-1)) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 log(x2bar) = log(x2bar(-1)) + ex2bar;
 
 [name='eq:pac']
diff --git a/tests/pac/trend-component-4/example.mod b/tests/pac/trend-component-4/example.mod
index ce0d5d5b5..b4cb9eb66 100644
--- a/tests/pac/trend-component-4/example.mod
+++ b/tests/pac/trend-component-4/example.mod
@@ -35,16 +35,16 @@ pac_model(auxiliary_model_name=toto, discount=beta, model_name=pacman);
 
 model;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1))+a_x1_0_*(x2(-1)-x2bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='eq:pac']
diff --git a/tests/pac/trend-component-5/example.mod b/tests/pac/trend-component-5/example.mod
index 490ad3995..afc28b482 100644
--- a/tests/pac/trend-component-5/example.mod
+++ b/tests/pac/trend-component-5/example.mod
@@ -42,16 +42,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='eq:pac']
diff --git a/tests/pac/trend-component-6/example.mod b/tests/pac/trend-component-6/example.mod
index 3adabb3f8..c4cc3228b 100644
--- a/tests/pac/trend-component-6/example.mod
+++ b/tests/pac/trend-component-6/example.mod
@@ -42,16 +42,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-7/example.mod b/tests/pac/trend-component-7/example.mod
index 498820537..64f48146e 100644
--- a/tests/pac/trend-component-7/example.mod
+++ b/tests/pac/trend-component-7/example.mod
@@ -40,16 +40,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-8-mc-iterative-ols/example.mod b/tests/pac/trend-component-8-mc-iterative-ols/example.mod
index 0f82da8e0..c5be0854e 100644
--- a/tests/pac/trend-component-8-mc-iterative-ols/example.mod
+++ b/tests/pac/trend-component-8-mc-iterative-ols/example.mod
@@ -41,16 +41,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-8-mc-nls/example.mod b/tests/pac/trend-component-8-mc-nls/example.mod
index 96a0c7120..e9dbdbd6c 100644
--- a/tests/pac/trend-component-8-mc-nls/example.mod
+++ b/tests/pac/trend-component-8-mc-nls/example.mod
@@ -41,16 +41,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/trend-component-9/example.mod b/tests/pac/trend-component-9/example.mod
index 57a35712a..a9b0b3bb8 100644
--- a/tests/pac/trend-component-9/example.mod
+++ b/tests/pac/trend-component-9/example.mod
@@ -39,16 +39,16 @@ model;
 [name='eq:y']
 y = rho_1*y(-1) + rho_2*y(-2) + ey;
 
-[name='eq:x1', data_type='nonstationary']
+[name='eq:x1']
 diff(x1) = a_x1_0*(x1(-1)-x1bar(-1)) + a_x1_1*diff(x1(-1)) + a_x1_2*diff(x1(-2)) + a_x1_x2_1*diff(x2(-1)) + a_x1_x2_2*diff(x2(-2)) + ex1;     
 
-[name='eq:x2', data_type='nonstationary']
+[name='eq:x2']
 diff(x2) = a_x2_0*(x2(-1)-x2bar(-1)) + a_x2_1*diff(x1(-1)) + a_x2_2*diff(x1(-2)) + a_x2_x1_1*diff(x2(-1)) + a_x2_x1_2*diff(x2(-2)) + ex2;     
 
-[name='eq:x1bar', data_type='nonstationary']
+[name='eq:x1bar']
 x1bar = x1bar(-1) + ex1bar;
 
-[name='eq:x2bar', data_type='nonstationary']
+[name='eq:x2bar']
 x2bar = x2bar(-1) + ex2bar;
 
 [name='zpac']
diff --git a/tests/pac/var-1/example.mod b/tests/pac/var-1/example.mod
index bb5d6e0ed..1af81481d 100644
--- a/tests/pac/var-1/example.mod
+++ b/tests/pac/var-1/example.mod
@@ -29,7 +29,7 @@ model;
 [name='eq:y']
 y = a_y_1*y(-1) + a_y_2*diff(x(-1)) + b_y_1*y(-2) + b_y_2*diff(x(-2)) + ey ;
 
-[name='eq:x', data_type='nonstationary']
+[name='eq:x']
 diff(x) = b_x_1*y(-2) + b_x_2*diff(x(-1)) + ex ;
 
 [name='eq:pac']
diff --git a/tests/pac/var-2/example.mod b/tests/pac/var-2/example.mod
index 9f3e7068a..8c212f266 100644
--- a/tests/pac/var-2/example.mod
+++ b/tests/pac/var-2/example.mod
@@ -31,7 +31,7 @@ model;
 [name='eq:y']
 y = a_y_1*y(-1) + a_y_2*diff(x(-1)) + b_y_1*y(-2) + b_y_2*diff(x(-2)) + ey ;
 
-[name='eq:x', data_type='nonstationary']
+[name='eq:x']
 diff(x) = b_x_1*y(-2) + b_x_2*diff(x(-1)) + ex ;
 
 [name='eq:pac']
diff --git a/tests/pac/var-3/example.mod b/tests/pac/var-3/example.mod
index 21a18a4c5..67f8f7477 100644
--- a/tests/pac/var-3/example.mod
+++ b/tests/pac/var-3/example.mod
@@ -31,7 +31,7 @@ model;
 [name='eq:y']
 y = a_y_1*y(-1) + a_y_2*diff(x(-1)) + b_y_1*y(-2) + b_y_2*diff(x(-2)) + ey ;
 
-[name='eq:x', data_type='nonstationary']
+[name='eq:x']
 diff(x) = b_x_1*y(-2) + b_x_2*diff(x(-1)) + ex ;
 
 [name='eq:pac']
diff --git a/tests/pac/var-4/example.mod b/tests/pac/var-4/example.mod
index f5a8f62f0..9716e04ae 100644
--- a/tests/pac/var-4/example.mod
+++ b/tests/pac/var-4/example.mod
@@ -31,7 +31,7 @@ model;
 [name='eq:y']
 y = a_y_1*y(-1) + a_y_2*diff(x(-1)) + b_y_1*y(-2) + b_y_2*diff(x(-2)) + ey ;
 
-[name='eq:x', data_type='nonstationary']
+[name='eq:x']
 diff(x) = b_x_1*y(-2) + b_x_2*diff(x(-1)) + g*(1-b_x_2)  + ex ;
 
 [name='eq:pac']
diff --git a/tests/pac/var-5/example.mod b/tests/pac/var-5/example.mod
index 80f570d07..9e7ed195c 100644
--- a/tests/pac/var-5/example.mod
+++ b/tests/pac/var-5/example.mod
@@ -31,7 +31,7 @@ model;
 [name='eq:y']
 y = a_y_1*y(-1) + a_y_2*diff(x(-1)) + b_y_1*y(-2) + b_y_2*diff(x(-2)) + ey ;
 
-[name='eq:x', data_type='nonstationary']
+[name='eq:x']
 diff(x) = b_x_1*y(-2) + b_x_2*diff(x(-1)) + g*(1-b_x_2)  + ex ;
 
 [name='eq:pac']
diff --git a/tests/pac/var-5/substitution.mod b/tests/pac/var-5/substitution.mod
index 41c55fbfb..a96958521 100644
--- a/tests/pac/var-5/substitution.mod
+++ b/tests/pac/var-5/substitution.mod
@@ -28,7 +28,7 @@ model;
 [name='eq:y']
 y = a_y_1*y(-1) + a_y_2*diff(x(-1)) + b_y_1*y(-2) + b_y_2*diff(x(-2)) + ey ;
 
-[name='eq:x', data_type='nonstationary']
+[name='eq:x']
 diff(x) = b_x_1*y(-2) + b_x_2*diff(x(-1)) + g*(1-b_x_2)  + ex ;
 
 [name='eq:pac']