diff --git a/backend/app/exports/export_tasks.py b/backend/app/exports/export_tasks.py
index fbe92e342..c323058e7 100644
--- a/backend/app/exports/export_tasks.py
+++ b/backend/app/exports/export_tasks.py
@@ -68,7 +68,12 @@ class ScenarioExportTasks:
         **override**, not a co-filter: when present it is used as given;
         otherwise the ``filters`` are resolved against the portfolio through the
         shared Modelling Run resolver (ADR-0056)."""
-        raise NotImplementedError
+        if property_ids:
+            return sorted(set(property_ids))
+        resolved = resolve_filtered_property_ids(
+            self._session, portfolio_id, filters
+        )
+        return sorted({filtered.property_id for filtered in resolved})
 
     def create_export_subtask(
         self, task_id: UUID, subtask_id: UUID, recipe: dict[str, Any]