diff --git a/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py b/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py
index 5b98b5de0..50afed3b0 100644
--- a/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py
+++ b/plugin/teksi_wastewater/interlis/interlis_importer_exporter.py
@@ -111,6 +111,10 @@ def interlis_import(self, xtf_file_input, show_selection_dialog=False, logs_next
         self._progress_done(30, "Importing XTF data...")
         self._import_xtf_file(xtf_file_input=xtf_file_input)
 
+        # Disable symbology triggers
+        self._progress_done(35, "Disable symbolgy triggers...")
+        self._import_disable_symbology_triggers()
+
         # Import from the temporary ili2pg model
         self._progress_done(40, "Converting to Teksi Wastewater...")
         tww_session = self._import_from_intermediate_schema(import_model)
@@ -123,6 +127,7 @@ def interlis_import(self, xtf_file_input, show_selection_dialog=False, logs_next
             if import_dialog.exec_() == import_dialog.Rejected:
                 tww_session.rollback()
                 tww_session.close()
+                self._import_enable_symbology_triggers()
                 raise InterlisImporterExporterStopped()
             QApplication.setOverrideCursor(Qt.WaitCursor)
         else:
@@ -134,7 +139,12 @@ def interlis_import(self, xtf_file_input, show_selection_dialog=False, logs_next
         self._progress_done(95, "Update main cover and refresh materialized views...")
         self._import_update_main_cover_and_refresh_mat_views()
 
+        # Reenable symbology triggers
+        self._progress_done(95, "Reenable symbology triggers...")
+        self._import_enable_symbology_triggers()
+
         self._progress_done(100)
+        logger.info("Interlis import finished.")
 
     def interlis_export(
         self,
@@ -190,6 +200,7 @@ def interlis_export(
         self._export_xtf_files(file_name_base, export_models)
 
         self._progress_done(100)
+        logger.info("Interlis export finished.")
 
     def _import_validate_xtf_file(self, xtf_file_input):
         log_path = make_log_path(self.base_log_path, "ilivalidator")
@@ -262,6 +273,30 @@ def _import_update_main_cover_and_refresh_mat_views(self):
         connection.commit()
         connection.close()
 
+    def _import_disable_symbology_triggers(self):
+        connection = psycopg.connect(get_pgconf_as_psycopg_dsn(), **DEFAULTS_CONN_ARG)
+        if PSYCOPG_VERSION == 2:
+            connection.set_session(autocommit=True)
+        cursor = connection.cursor()
+
+        logger.info("Disable symbology triggers")
+        cursor.execute("SELECT tww_sys.disable_symbology_triggers();")
+
+        connection.commit()
+        connection.close()
+
+    def _import_enable_symbology_triggers(self):
+        connection = psycopg.connect(get_pgconf_as_psycopg_dsn(), **DEFAULTS_CONN_ARG)
+        if PSYCOPG_VERSION == 2:
+            connection.set_session(autocommit=True)
+        cursor = connection.cursor()
+
+        logger.info("Enable symbology triggers")
+        cursor.execute("SELECT tww_sys.enable_symbology_triggers();")
+
+        connection.commit()
+        connection.close()
+
     def _export_labels_file(
         self, limit_to_selection, selected_labels_scales_indices, labels_file_path
     ):
diff --git a/plugin/teksi_wastewater/interlis/interlis_model_mapping/interlis_importer_to_intermediate_schema.py b/plugin/teksi_wastewater/interlis/interlis_model_mapping/interlis_importer_to_intermediate_schema.py
index 749cd9d18..859814d55 100644
--- a/plugin/teksi_wastewater/interlis/interlis_model_mapping/interlis_importer_to_intermediate_schema.py
+++ b/plugin/teksi_wastewater/interlis/interlis_model_mapping/interlis_importer_to_intermediate_schema.py
@@ -48,16 +48,6 @@ def _tww_import(self, skip_closing_tww_session):
                                 commit or rollback and close the session.
         """
 
-        pre_session = Session(
-            utils.tww_sqlalchemy.create_engine(), autocommit=False, autoflush=False
-        )
-
-        # We also drop symbology triggers as they badly affect performance. This must be done in a separate session as it
-        # would deadlock other sessions.
-        pre_session.execute(text("SELECT tww_sys.disable_symbology_triggers();"))
-        pre_session.commit()
-        pre_session.close()
-
         # We use two different sessions for reading and writing so it's easier to
         # review imports and to keep the door open to getting data from another
         # connection / database type.
@@ -381,17 +371,6 @@ def close_sessions(self, skip_closing_tww_session=False):
             self.session_tww.close()
         self.session_interlis.close()
 
-        try:
-            post_session = Session(
-                utils.tww_sqlalchemy.create_engine(), autocommit=False, autoflush=False
-            )
-            post_session.execute(text("SELECT tww_sys.enable_symbology_triggers();"))
-            post_session.commit()
-            post_session.close()
-
-        except Exception as exception:
-            logger.error(f"Could not re-enable symbology triggers: '{exception}'")
-
     def get_vl_instance(self, vl_table, value_de):
         """
         Gets a value list instance from the value_de name. Returns None and a warning if not found.