diff --git a/db/migrate/20170418104901_migrate_documents.rb b/db/migrate/20170418104901_migrate_documents.rb
index 1165f7aa..02a2757e 100644
--- a/db/migrate/20170418104901_migrate_documents.rb
+++ b/db/migrate/20170418104901_migrate_documents.rb
@@ -36,31 +36,31 @@ class MigrateDocuments < ActiveRecord::Migration
                     folder = self.storage_base_path(dmsf_file_revision)
                     Dir.rmdir(folder) if (folder && (Dir.entries(folder).size == 2))
                   rescue Exception => e
-                    Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: #{e.message}"
+                    say "DmsfFileRevisions ID #{dmsf_file_revision.id}: #{e.message}"
                   end
                 else
-                  Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: Target '#{target}' exists"
+                  say "DmsfFileRevisions ID #{dmsf_file_revision.id}: Target '#{target}' exists"
                 end
               else
-                Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: target = nil"
+                say "DmsfFileRevisions ID #{dmsf_file_revision.id}: target = nil"
               end
             else
-              Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: Origin '#{origin}' doesn't exist"
+              say "DmsfFileRevisions ID #{dmsf_file_revision.id}: Origin '#{origin}' doesn't exist"
             end
           else
-            Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: disk_file = nil"
+            say "DmsfFileRevisions ID #{dmsf_file_revision.id}: disk_file = nil"
           end
         else
-          Rails.logger.error "DmsfFile ID #{dmsf_file_revision.dmsf_file.id}: project = nil"
+          say "DmsfFile ID #{dmsf_file_revision.dmsf_file.id}: project = nil"
         end
       else
-        Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: dmsf_file = nil"
+        say "DmsfFileRevisions ID #{dmsf_file_revision.id}: dmsf_file = nil"
       end
     end
   end
 
   def down
-    # Migrate all documents from dmsf/p_{project identifier} to dmsf/{year}/{month}
+    # Migrate all documents from dmsf/{year}/{month} to dmsf/p_{project identifier}
     DmsfFileRevision.find_each do |dmsf_file_revision|
       if dmsf_file_revision.dmsf_file
         if dmsf_file_revision.dmsf_file.project
@@ -75,25 +75,25 @@ class MigrateDocuments < ActiveRecord::Migration
                     folder = dmsf_file_revision.storage_base_path
                     Dir.rmdir(folder) if (folder && (Dir.entries(folder).size == 2))
                   rescue Exception => e
-                    Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: #{e.message}"
+                    say "DmsfFileRevisions ID #{dmsf_file_revision.id}: #{e.message}"
                   end
                 else
-                  Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: Target '#{target}' exists"
+                  say "DmsfFileRevisions ID #{dmsf_file_revision.id}: Target '#{target}' exists"
                 end
               else
-                Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: target = nil"
+                say "DmsfFileRevisions ID #{dmsf_file_revision.id}: target = nil"
               end
             else
-              Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: Origin '#{origin}' doesn't exist"
+              say "DmsfFileRevisions ID #{dmsf_file_revision.id}: Origin '#{origin}' doesn't exist"
             end
           else
-            Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: disk_file = nil"
+            say "DmsfFileRevisions ID #{dmsf_file_revision.id}: disk_file = nil"
           end
         else
-          Rails.logger.error "DmsfFile ID #{dmsf_file_revision.dmsf_file.id}: project = nil"
+          say "DmsfFile ID #{dmsf_file_revision.dmsf_file.id}: project = nil"
         end
       else
-        Rails.logger.error "DmsfFileRevisions ID #{dmsf_file_revision.id}: dmsf_file = nil"
+        say "DmsfFileRevisions ID #{dmsf_file_revision.id}: dmsf_file = nil"
       end
     end
   end
diff --git a/db/migrate/20170718132801_migrate_documents2.rb b/db/migrate/20170718132801_migrate_documents2.rb
new file mode 100644
index 00000000..b7c8ae3e
--- /dev/null
+++ b/db/migrate/20170718132801_migrate_documents2.rb
@@ -0,0 +1,41 @@
+# encoding: utf-8
+#
+# Redmine plugin for Document Management System "Features"
+#
+# Copyright (C) 2011-17 Karel Pičman <karel.picman@kontron.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+require File.expand_path('../20170418104901_migrate_documents', __FILE__)
+
+class MigrateDocuments2 < ActiveRecord::Migration
+
+  # Copy of 20170418104901_migrate_documents.rb
+  # Due to an error it might have happened that not all files have been migrated.
+  # So, let's run the migration again
+
+  def up
+    # Migrate all documents from dmsf/p_{project identifier} to dmsf/{year}/{month}
+    migration = MigrateDocuments.new
+    migration.up
+  end
+
+  def down
+    # Migrate all documents from dmsf/{year}/{month} to dmsf/p_{project identifier}
+    migration = MigrateDocuments.new
+    migration.down
+  end
+
+end