diff --git a/backend/app/db/functions/recommendations_functions.py b/backend/app/db/functions/recommendations_functions.py
index 28d82416..6816e25b 100644
--- a/backend/app/db/functions/recommendations_functions.py
+++ b/backend/app/db/functions/recommendations_functions.py
@@ -634,17 +634,26 @@ def get_scenario(scenario_id: int) -> Optional[ScenarioModel]:
 
 def update_plan(plan_model: PlanModel, scenario_model: ScenarioModel) -> bool:
     with db_read_session() as session:
-        stmt = (
-            update(PlanModel)
-            .where(PlanModel.id == plan_model.id)
-            .values(**plan_model.model_dump(exclude={"id"}, exclude_unset=True))
+        plan_values = {
+            c.name: getattr(plan_model, c.name)
+            for c in plan_model.__table__.columns
+            if c.name != "id"
+        }
+        scenario_values = {
+            c.name: getattr(scenario_model, c.name)
+            for c in scenario_model.__table__.columns
+            if c.name not in {"id", "portfolio_id"}
+        }
+
+        plan_stmt = (
+            update(PlanModel).where(PlanModel.id == plan_model.id).values(**plan_values)
         )
-        plan_result = session.exec(stmt)
+        plan_result = session.exec(plan_stmt)
 
         scenario_stmt = (
             update(ScenarioModel)
             .where(ScenarioModel.id == scenario_model.id)
-            .values(**scenario_model.model_dump(exclude={"id"}, exclude_unset=True))
+            .values(**scenario_values)
         )
         session.exec(scenario_stmt)