diff --git a/coldfront/plugins/ifx/calculator.py b/coldfront/plugins/ifx/calculator.py
index 7ada73842..0adf7209e 100644
--- a/coldfront/plugins/ifx/calculator.py
+++ b/coldfront/plugins/ifx/calculator.py
@@ -111,7 +111,6 @@ def generate_billing_records_for_organization(self, year, month, organization, r
         '''
         successes = []
         errors = []
-
         if organization.org_tree == 'Harvard':
             projects = [po.project for po in organization.projectorganization_set.all()]
             if not projects:
diff --git a/coldfront/plugins/ifx/views.py b/coldfront/plugins/ifx/views.py
index bd4e8293a..4bdee1be5 100644
--- a/coldfront/plugins/ifx/views.py
+++ b/coldfront/plugins/ifx/views.py
@@ -113,6 +113,7 @@ def calculate_billing_month(request, year, month):
     try:
         if recalculate:
             ifxbilling_models.BillingRecord.objects.filter(year=year, month=month).delete()
+            ifxbilling_models.ProductUsageProcessing.objects.filter(product_usage__year=year, product_usage__month=month).delete()
         calculator = NewColdfrontBillingCalculator()
         calculator.calculate_billing_month(year, month, recalculate=recalculate)
         return Response('OK', status=status.HTTP_200_OK)
diff --git a/ifxbilling b/ifxbilling
index 3a1cc1199..177760142 160000
--- a/ifxbilling
+++ b/ifxbilling
@@ -1 +1 @@
-Subproject commit 3a1cc1199b2f3c4da6fe31e998fce0e3ff5486ba
+Subproject commit 177760142bf90f2fab5f313fae3c55c8a4328a72