Avoid needless and undesired modification of HS periodicity.

master/bt5/vifib_slap/SkinTemplateItem/portal_skins/vifib_slap/Person_getOpenOrderDifference.xml

@@ -93,18 +93,19 @@ for start_date_tuple in start_date_tuple_list:\n
   start_date = getClosestDate(target_date=start_date_tuple[1], precision=\'day\')\n
   while start_date.day() >= 29:\n
     start_date = addToDate(start_date, to_add={\'day\': -1})\n
+  start_date_modified = False\n
   if start_date_tuple[0] in hosting_subscription_mapping:\n
     line_id = hosting_subscription_mapping[start_date_tuple[0]]\n
     line = previous_open_sale_order[line_id]\n
     if line.getStartDate() is None:\n
       modify_kw_kw[line.getAggregate(portal_type=\'Hosting Subscription\')] = {\'start_date\': start_date}\n
       modify_kw_kw[line.getAggregate(portal_type=\'Hosting Subscription\')][\'explanation\'] = [\'Set start date because of %s\' % explanation]\n
-    else:\n
-      # reset start_date to possibly already set up on Open Order Line\n
-      start_date = line.getStartDate()\n
+      start_date_modified = True\n
   elif start_date_tuple[0] in add_kw_kw:\n
     add_kw_kw[start_date_tuple[0]][\'start_date\'] = start_date\n
     add_kw_kw[start_date_tuple[0]][\'explanation\'].append(\'Added start date beacuse of %s\' % explanation)\n
+    start_date_modified = True\n
+  if start_date_modified:\n
     hs = portal.restrictedTraverse(start_date_tuple[0])\n
     if hs.getPeriodicityMonthDayList() != [start_date.day()]:\n
       hs_modify_kw_kw.setdefault(start_date_tuple[0], {})\n

master/bt5/vifib_slap/bt/revision

-686
\ No newline at end of file
+687
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