diff --git a/_config/legacy.yml b/_config/legacy.yml
new file mode 100644
index 0000000..e769aaf
--- /dev/null
+++ b/_config/legacy.yml
@@ -0,0 +1,9 @@
+---
+Name: bloglegacy
+---
+SilverStripe\ORM\DatabaseAdmin:
+  classname_value_remapping:
+    Blog: SilverStripe\Blog\Model\Blog
+    BlogCategory: SilverStripe\Blog\Model\BlogCategory
+    BlogPost: SilverStripe\Blog\Model\BlogPost
+    BlogTag: SilverStripe\Blog\Model\BlogTag