diff --git a/rattail_corepos/config.py b/rattail_corepos/config.py
index 72c7cd1..c6cb8d2 100644
--- a/rattail_corepos/config.py
+++ b/rattail_corepos/config.py
@@ -63,12 +63,21 @@ class RattailCOREPOSExtension(ConfigExtension):
         config.coretrans_engines = engines
         config.coretrans_engine = engines.get('default')
 
-        # office_trans_archive
-        from corepos.db.office_trans_archive import Session
-        engines = get_engines(config, section='corepos.db.office_trans_archive')
-        config.core_office_trans_archive_engines = engines
-        config.core_office_trans_archive_engine = engines.get('default')
-        Session.configure(bind=config.core_office_trans_archive_engine)
+        # office_arch
+        from corepos.db.office_arch import Session
+        engines = get_engines(config, section='corepos.db.office_arch')
+        if not engines:
+            engines = get_engines(config, section='corepos.db.office_trans_archive')
+            if engines:
+                warnings.warn("config section [corepos.db.office_trans_archive] is deprecated; "
+                              "please use section [corepos.db.office_arch] instead",
+                              DeprecationWarning)
+        config.core_office_arch_engines = engines
+        config.core_office_arch_engine = engines.get('default')
+        # TODO: deprecate / remove these 2
+        config.core_office_trans_archive_engines = config.core_office_arch_engines
+        config.core_office_trans_archive_engine = config.core_office_arch_engine
+        Session.configure(bind=config.core_office_arch_engine)
 
         # lane_op
         from corepos.db.lane_op import Session