diff --git a/themis/libellioimport/migration.py b/themis/libellioimport/migration.py
index fe3dff8..08889ea 100644
--- a/themis/libellioimport/migration.py
+++ b/themis/libellioimport/migration.py
@@ -555,6 +555,7 @@ class SplitDocNumbers(BrowserView):
                     print 'failed to get suite number for', attr_value
                     continue
             print >> fd, object.id, attr_value
+            object.orig_number = attr_value
             setattr(object, attr, new_number)
             if no_suite:
                 object.numero_suite = no_suite