--- loncom/auth/migrateuser.pm	2021/11/18 20:25:27	1.56
+++ loncom/auth/migrateuser.pm	2022/02/06 21:37:04	1.57
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Starts a user off based of an existing token.
 #
-# $Id: migrateuser.pm,v 1.56 2021/11/18 20:25:27 raeburn Exp $
+# $Id: migrateuser.pm,v 1.57 2022/02/06 21:37:04 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -739,6 +739,17 @@ sub handler {
                 }
             }
             if ($data{'linkprot'} ne '') {
+                if (($env{'user.name'} ne $data{'username'}) ||
+                    ($env{'user.domain'} ne $data{'domain'})) {
+                    my %linkprot_env;
+                    foreach my $item ('linkprot','deeplink.login') {
+                        if ($data{$item}) {
+                            $linkprot_env{'request.'.$item} = $data{$item};
+                        }
+                    }
+                    &logout($r,$ip,$handle,\%data,\%linkprot_env);
+                    return OK;
+                }
                 &Apache::lonnet::appenv({'request.linkprot' => $data{'linkprot'}});
                 if ($env{'request.linkkey'}) {
                     &Apache::lonnet::delenv('request.linkkey');