diff --git a/xCAT-server/lib/xcat/plugins/xen.pm b/xCAT-server/lib/xcat/plugins/xen.pm
index 3556197e0..287580666 100644
--- a/xCAT-server/lib/xcat/plugins/xen.pm
+++ b/xCAT-server/lib/xcat/plugins/xen.pm
@@ -568,7 +568,9 @@ sub guestcmd {
 
 sub preprocess_request { 
   my $request = shift;
-  if ($request->{_xcatdest}) { return [$request]; }    #exit if preprocessed
+  #if already preprocessed, go straight to request
+  if ($request->{_xcatpreprocessed}->[0] == 1) { return [$request]; }
+
   my $callback=shift;
   my @requests;
 
@@ -609,6 +611,8 @@ sub preprocess_request {
     my $reqcopy = {%$request};
     $reqcopy->{node} = $sn->{$snkey};
     $reqcopy->{'_xcatdest'} = $snkey;
+    $reqcopy->{_xcatpreprocessed}->[0] = 1; 
+
     push @requests, $reqcopy;
   }
   return \@requests;