Index: /trunk/pstamp/scripts/pstamp_checkdependent.pl
===================================================================
--- /trunk/pstamp/scripts/pstamp_checkdependent.pl	(revision 37014)
+++ /trunk/pstamp/scripts/pstamp_checkdependent.pl	(revision 37015)
@@ -318,8 +318,15 @@
             $command .= " -set_label $rlabel" if $rlabel;
 
-            # if this is one of the chipRuns from the PV1 LAP regenerate without using the ppImage configdump file
+            my $update_mode;
             if ($chip->{data_group} =~ /^LAP.ThreePi.20120706/) {
-                $command .= ' -set_update_mode 1';
+                # if this is one of the chipRuns from the PV1 LAP regenerate without using the ppImage configdump file.
+                # XXX: PV2 processing is complete. Don't do this anymore
+                # $update_mode = 1;
+            } elsif ($chip->{data_group} =~ /^M31.rp.2013/) {
+                # Version of M31 processed with recipes and auxiliary masks incompatible with the
+                # current code. Run from scratch which will use compatible versions of the same masks..
+                $update_mode = 1;
             } 
+            $command .= " -set_update_mode $update_mode" if $update_mode;
 
             if (!$no_update) {