--- loncom/enrollment/Enrollment.pm	2013/08/14 00:38:50	1.46
+++ loncom/enrollment/Enrollment.pm	2016/06/03 01:22:36	1.48
@@ -1,5 +1,5 @@
 # Automated Enrollment manager
-# $Id: Enrollment.pm,v 1.46 2013/08/14 00:38:50 raeburn Exp $
+# $Id: Enrollment.pm,v 1.48 2016/06/03 01:22:36 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -61,6 +61,7 @@ sub update_LC {
     my @activestudents = ();
     my @excludedstudents = ();
     my $currlist;
+    my $now = time;
     foreach my $uname (keys %{$roster} ) {
         if ($uname =~ m/^(.+):$dom$/) {
             if ($$roster{$uname}[$status] eq "Active") {
@@ -196,9 +197,11 @@ sub update_LC {
         }
     }
 
-# Explicitly allow access to creation/modification of students if called as an automated process.
+# Explicitly allow access to creation/modification of students and group membership changes 
+# when called as an automated process.
     if ($context eq 'automated') {
         $env{'allowed.cst'}='F';
+        $env{'allowed.mdg'}='F';
     }
 
 # Compare IDs with existing LON-CAPA enrollment for this class
@@ -339,6 +342,7 @@ sub update_LC {
                     my ($auth,$authparam,$first,$middle,$last,$gene,$usec,$end,$start,$emailaddr,$pid,$emailenc,$credithours);
                     &prepare_add($authtype,$autharg,$enddate,$startdate,\@stuinfo,\%place,\$dom,\$uname,\$auth,\$authparam,\$first,\$middle,\$last,\$gene,\$usec,\$end,\$start,\$emailaddr,\$pid,\$emailenc);
 # Check for existing account in this LON-CAPA domain for this username
+                    next if (($end) && ($end < $now));
                     my $uhome=&Apache::lonnet::homeserver($uname,$dom);
                     if ($uhome eq 'no_host') { # User does not exist
                         my $args = {'auth' => $auth,
@@ -444,9 +448,11 @@ sub update_LC {
         }
     }
 
-# Terminated explictly allowed access to student creation/modification
+# Terminated explictly allowed access to student creation/modification 
+# and group membership changes
     if ($context eq 'automated') {
         delete($env{'allowed.cst'});
+        delete($env{'allowed.mdg'});
     }
     if ($enrollcount > 0) {
         if ($context eq "updatenow") {
@@ -651,7 +657,7 @@ sub prepare_add {
     $$start = $$stuinfo[ $$place{'startdate'} ];
     $$emailaddr = $$stuinfo[ $$place{'email'} ];
     $$pid = $$stuinfo[ $$place{'studentID'} ];
-                                                                                  
+
 # remove non alphanumeric values from section
     $$usec =~ s/\W//g;