fix import

git-svn-id: https://svn.erp5.org/repos/public/erp5/sandbox/amount_generator@35787 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/SubscriptionItem.py

@@ -33,7 +33,7 @@ from AccessControl import ClassSecurityInfo
 from Products.CMFCore.utils import getToolByName
 from Products.ERP5Type import Permissions, PropertySheet, interfaces
 from Products.ERP5.Document.Item import Item
-from Products.ERP5.mixin.movement_generator import MovementGeneratorMixin
+from Products.ERP5.mixin.rule import MovementGeneratorMixin
 from Products.ERP5.mixin.periodicity import PeriodicityMixin
 
 class SubscriptionItem(Item, MovementGeneratorMixin, PeriodicityMixin):