diff --git a/theo/config.py b/theo/config.py
index 5008293..aea4152 100644
--- a/theo/config.py
+++ b/theo/config.py
@@ -49,6 +49,7 @@ class TheoConfig(ConfigExtension):
         # do we integrate w/ CORE-POS?
         elif integrate_corepos(config):
             config.setdefault('rattail', 'model', 'theo.db.model_corepos')
+            config.setdefault('rattail.importing', 'versions.handler', 'rattail_corepos.importing.versions:FromRattailToRattailVersions')
 
 
 def integrate_catapult(config):