diff --git a/src/ert/run_models/iterated_ensemble_smoother.py b/src/ert/run_models/iterated_ensemble_smoother.py
index 2533d536b6c..c1a8a680060 100644
--- a/src/ert/run_models/iterated_ensemble_smoother.py
+++ b/src/ert/run_models/iterated_ensemble_smoother.py
@@ -146,12 +146,6 @@ def run_experiment(
             ensemble=prior,
         )
 
-        self.set_env_key("_ERT_ITERATION", "0")
-        self.set_env_key(
-            "_IS_FINAL_ITERATION",
-            "False",
-        )
-
         sample_prior(
             prior,
             np.where(self.active_realizations)[0],
@@ -166,11 +160,6 @@ def run_experiment(
 
         self.run_workflows(HookRuntime.PRE_FIRST_UPDATE, self._storage, prior)
         for prior_iter in range(self._total_iterations):
-            self.set_env_key("_ERT_ITERATION", str(prior_iter + 1))
-            self.set_env_key(
-                "_IS_FINAL_ITERATION",
-                "True" if (prior_iter == self._total_iterations - 1) else "False",
-            )
             self.send_event(
                 RunModelUpdateBeginEvent(iteration=prior_iter, run_id=prior.id)
             )
diff --git a/src/ert/run_models/multiple_data_assimilation.py b/src/ert/run_models/multiple_data_assimilation.py
index 4f2de8e38c6..098393b9f51 100644
--- a/src/ert/run_models/multiple_data_assimilation.py
+++ b/src/ert/run_models/multiple_data_assimilation.py
@@ -100,13 +100,6 @@ def run_experiment(
                         f"restart iteration = {prior.iteration + 1}"
                     )
 
-                self.set_env_key("_ERT_ITERATION", str(self.start_iteration))
-                self.set_env_key(
-                    "_IS_FINAL_ITERATION",
-                    "True"
-                    if (self.start_iteration == self._total_iterations - 1)
-                    else "False",
-                )
             except (KeyError, ValueError) as err:
                 raise ErtRunError(
                     f"Prior ensemble with ID: {id} does not exists"