diff --git a/src/sorcha/ephemeris/simulation_geometry.py b/src/sorcha/ephemeris/simulation_geometry.py
index 0d0f57ec..e33b8c41 100644
--- a/src/sorcha/ephemeris/simulation_geometry.py
+++ b/src/sorcha/ephemeris/simulation_geometry.py
@@ -1,12 +1,11 @@
 import healpy as hp
 import numpy as np
-from sorcha.ephemeris.simulation_constants import (
-    RADIUS_EARTH_KM,
-    SPEED_OF_LIGHT,
-    ECL_TO_EQ_ROTATION_MATRIX,
-)
 import spiceypy as spice
 
+from sorcha.ephemeris.simulation_constants import (ECL_TO_EQ_ROTATION_MATRIX,
+                                                   RADIUS_EARTH_KM,
+                                                   SPEED_OF_LIGHT)
+
 
 def ecliptic_to_equatorial(v, rot_mat=ECL_TO_EQ_ROTATION_MATRIX):
     """
@@ -66,6 +65,8 @@ def integrate_light_time(sim, ex, t, r_obs, lt0=0, iter=3, speed_of_light=SPEED_
     except NameError:
         USE_INTEGRATE = False
 
+    print("USE_INTEGRATE: ", USE_INTEGRATE)
+
     for i in range(iter):
         if USE_INTEGRATE:
             sim.integrate(t - lt)
diff --git a/src/sorcha/utilities/sorchaConfigs.py b/src/sorcha/utilities/sorchaConfigs.py
index a53d4b2e..97214529 100644
--- a/src/sorcha/utilities/sorchaConfigs.py
+++ b/src/sorcha/utilities/sorchaConfigs.py
@@ -783,6 +783,7 @@ def _validate_expert_configs(self):
         self.default_SNR_cut = cast_as_bool_or_set_default(self.default_SNR_cut, "default_SNR_cut", True)
         self.randomization_on = cast_as_bool_or_set_default(self.randomization_on, "randomization_on", True)
         self.vignetting_on = cast_as_bool_or_set_default(self.vignetting_on, "vignetting_on", True)
+        self.ar_use_integrate = cast_as_bool_or_set_default(self.ar_use_integrate, "ar_use_integrate", False)
 
 
 @dataclass