Index: /tags/ipp-20130307/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm
===================================================================
--- /tags/ipp-20130307/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 35479)
+++ /tags/ipp-20130307/PS-IPP-PStamp/lib/PS/IPP/PStamp/Job.pm	(revision 35480)
@@ -78,5 +78,7 @@
            ($req_type ne "byskycell");
 
-    $default_data_groups = load_data_groups($verbose);
+    if (!$default_data_groups) {
+        $default_data_groups = load_data_groups($verbose);
+    }
 
     my $dateobs_begin;