diff --git a/tailbone_corepos/views/corepos/transactions/archive.py b/tailbone_corepos/views/corepos/transactions/archive.py
index 148ff06..ee00ef0 100644
--- a/tailbone_corepos/views/corepos/transactions/archive.py
+++ b/tailbone_corepos/views/corepos/transactions/archive.py
@@ -63,13 +63,16 @@ class TransactionDetailView(TransactionDetailMasterView):
         return engines
 
     def make_isolated_session(self):
-        from corepos.db.office_trans import Session as CoreTransArchiveSession
+        app = self.get_rattail_app()
+        corepos = app.get_corepos_handler()
 
         dbkey = self.get_current_engine_dbkey()
-        if dbkey != 'default' and dbkey in self.rattail_config.core_office_trans_archive_engines:
-            return CoreTransArchiveSession(bind=self.rattail_config.core_office_trans_archive_engines[dbkey])
+        engine = self.rattail_config.core_office_arch_engines.get(dbkey)
+        if not engine:
+            engine = self.rattail_config.core_office_arch_engine
+        assert engine
 
-        return CoreTransArchiveSession()
+        return corepos.make_session_office_arch(bind=engine)
 
 
 def defaults(config, **kwargs):