diff --git a/backend/app/db/functions/recommendations_functions.py b/backend/app/db/functions/recommendations_functions.py
index 7ffcf603..900b5b9f 100644
--- a/backend/app/db/functions/recommendations_functions.py
+++ b/backend/app/db/functions/recommendations_functions.py
@@ -632,8 +632,19 @@ def get_plans_by_scenario_ids(ids: List[int]) -> List[PlanModel]:
         return session_any.exec(stmt).scalars().all()
 
 
-def get_plan_ids_by_scenario_ids(scenario_ids: List[int]) -> List[int]:
-    stmt = select(PlanModel.id).where(PlanModel.scenario_id.in_(scenario_ids))
+def get_most_recent_plan_ids_by_scenario_ids(scenario_ids: List[int]) -> List[int]:
+    # NOTE: This statement works for Postgres only, because of the Distinct
+    stmt = (
+        select(PlanModel.id)
+        .where(PlanModel.scenario_id.in_(scenario_ids))
+        .distinct(PlanModel.scenario_id)
+        .order_by(
+            PlanModel.scenario_id,
+            PlanModel.created_at.desc(),
+            PlanModel.id.desc(),
+        )
+    )
+
     with db_read_session() as session:
         session_any: Any = session  # Typehint as Any to satisfy Pylance...
         return session_any.exec(stmt).scalars().all()
diff --git a/backend/categorisation/processor.py b/backend/categorisation/processor.py
index e90c3b08..ea12bc3b 100644
--- a/backend/categorisation/processor.py
+++ b/backend/categorisation/processor.py
@@ -4,7 +4,7 @@ from typing import Dict, List, Optional, Tuple
 from backend.app.db.functions.recommendations_functions import (
     bulk_update_plans,
     get_default_scenario_ids_for_portfolio,
-    get_plan_ids_by_scenario_ids,
+    get_most_recent_plan_ids_by_scenario_ids,
     get_plans_by_portfolio_id,
     get_plans_by_scenario_ids,
     get_scenarios_by_portfolio_id,
@@ -37,10 +37,8 @@ def process_portfolio(
         )
 
     plans: List[Plan] = _load_plans_for_portfolio(portfolio_id, scenarios_to_consider)
-    logger.info(f"Successfully loaded {len(plans)}")
 
     plans_by_property: Dict[int, List[Plan]] = _group_plans_by_property(plans)
-    logger.info("Successfully grouped plans by property")
 
     updated_plan_models: List[PlanModel] = []
     updated_scenario_models: List[ScenarioModel] = []
@@ -120,7 +118,7 @@ def _unset_defaults_for_scenarios_not_being_considered(
         )
 
     if len(scenarios_to_unset_default) > 0:
-        plans_to_unset_default: List[int] = get_plan_ids_by_scenario_ids(
+        plans_to_unset_default: List[int] = get_most_recent_plan_ids_by_scenario_ids(
             scenarios_to_unset_default
         )
         for plan_id in plans_to_unset_default: