diff --git a/phpBB/includes/db/migration/install.php b/phpBB/includes/db/migration/install.php
index af2ba392b1..95f3a3b994 100644
--- a/phpBB/includes/db/migration/install.php
+++ b/phpBB/includes/db/migration/install.php
@@ -66,16 +66,16 @@ class phpbb_db_migration_install
 
 	public function install(phpbb_db_driver $db, phpbb_db_tools $db_tools, $table_prefix, $version)
 	{
-		$this->create_table($db_tools);
+		$this->create_table($db_tools, $table_prefix);
 
 		$this->guess_installed_migrations($db, $table_prefix, $version);
 	}
 
-	protected function create_table(phpbb_db_tools $db_tools)
+	protected function create_table(phpbb_db_tools $db_tools, $table_prefix)
 	{
-		if (!$db_tools->sql_table_exists(MIGRATIONS_TABLE))
+		if (!$db_tools->sql_table_exists($table_prefix . 'migrations'))
 		{
-			$db_tools->sql_create_table(MIGRATIONS_TABLE, array(
+			$db_tools->sql_create_table($table_prefix . 'migrations', array(
 				'COLUMNS'		=> array(
 					'migration_name'			=> array('VCHAR', ''),
 					'migration_depends_on'		=> array('TEXT', ''),
@@ -100,7 +100,7 @@ class phpbb_db_migration_install
 		$installed = array();
 		foreach ($this->version_to_migration as $compare => $migration_list)
 		{
-			if (version_compare($version, $compare, '<='))
+			if (version_compare($version, $compare, '>='))
 			{
 				// The migration should have effectively been installed already
 				if (!is_array($migration_list))
@@ -110,18 +110,27 @@ class phpbb_db_migration_install
 
 				foreach ($migration_list as $migration_name)
 				{
-					$sql_ary = array(
-						'migration_name'			=> $migration_name,
-						'migration_depends_on'		=> $migration_name::depends_on(),
-						'migration_schema_done'		=> 1,
-						'migration_data_done'		=> 1,
-						'migration_data_state'		=> '',
-						'migration_start_time'		=> 0,
-						'migration_end_time'		=> 0,
-					);
-					$sql = 'INSERT INTO ' . $table_prefix . 'migrations ' .
-						$db->sql_build_array('INSERT', $sql_ary);
-					$db->sql_query($sql);
+					$sql = 'SELECT 1 FROM ' . $table_prefix . "migrations
+						WHERE migration_name = '" . $db->sql_escape($migration_name) . "'";
+					$result = $db->sql_query($sql);
+					$row = $db->sql_fetchrow($result);
+					$db->sql_freeresult($result);
+
+					if (!$row)
+					{
+						$sql_ary = array(
+							'migration_name'			=> $migration_name,
+							'migration_depends_on'		=> serialize($migration_name::depends_on()),
+							'migration_schema_done'		=> 1,
+							'migration_data_done'		=> 1,
+							'migration_data_state'		=> '',
+							'migration_start_time'		=> 0,
+							'migration_end_time'		=> 0,
+						);
+						$sql = 'INSERT INTO ' . $table_prefix . 'migrations ' .
+							$db->sql_build_array('INSERT', $sql_ary);
+						$db->sql_query($sql);
+					}
 				}
 			}
 		}
diff --git a/phpBB/install/database_update.php b/phpBB/install/database_update.php
index 74aa072d22..f220a1f684 100644
--- a/phpBB/install/database_update.php
+++ b/phpBB/install/database_update.php
@@ -21,6 +21,52 @@ define('IN_INSTALL', true);
 $phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './../';
 $phpEx = substr(strrchr(__FILE__, '.'), 1);
 
+if (!function_exists('phpbb_require_updated'))
+{
+	function phpbb_require_updated($path, $optional = false)
+	{
+		global $phpbb_root_path;
+
+		$new_path = $phpbb_root_path . 'install/update/new/' . $path;
+		$old_path = $phpbb_root_path . $path;
+
+		if (file_exists($new_path))
+		{
+			require($new_path);
+		}
+		else if (!$optional || file_exists($old_path))
+		{
+			require($old_path);
+		}
+	}
+}
+
+function phpbb_end_update($cache)
+{
+	$cache->purge();
+
+?>
+								</p>
+							</div>
+						</div>
+					<span class="corners-bottom"><span></span></span>
+				</div>
+			</div>
+		</div>
+
+		<div id="page-footer">
+			Powered by <a href="https://www.phpbb.com/">phpBB</a>&reg; Forum Software &copy; phpBB Group
+		</div>
+	</div>
+</body>
+</html>
+
+<?php
+
+	garbage_collection();
+	exit_handler();
+}
+
 phpbb_require_updated('includes/startup.' . $phpEx);
 
 include($phpbb_root_path . 'config.' . $phpEx);
@@ -149,7 +195,7 @@ header('Content-type: text/html; charset=UTF-8');
 
 // Make sure migrations have been installed. If not, install migrations and guess what migrations have been installed
 $db_tools = $phpbb_container->get('dbal.tools');
-if (!$db_tools->sql_table_exists(MIGRATIONS_TABLE))
+if (!$db_tools->sql_table_exists($table_prefix . 'migrations'))
 {
 	$migrations_installer = new phpbb_db_migration_install();
 	$migrations_installer->install($db, $db_tools, $table_prefix, $config['version']);
@@ -196,49 +242,3 @@ if ($orig_version != $config['version'])
 echo $lang['DATABASE_UPDATE_COMPLETE'];
 
 phpbb_end_update($cache);
-
-if (!function_exists('phpbb_require_updated'))
-{
-	function phpbb_require_updated($path, $optional = false)
-	{
-		global $phpbb_root_path;
-
-		$new_path = $phpbb_root_path . 'install/update/new/' . $path;
-		$old_path = $phpbb_root_path . $path;
-
-		if (file_exists($new_path))
-		{
-			require($new_path);
-		}
-		else if (!$optional || file_exists($old_path))
-		{
-			require($old_path);
-		}
-	}
-}
-
-function phpbb_end_update($cache)
-{
-	$cache->purge();
-
-?>
-								</p>
-							</div>
-						</div>
-					<span class="corners-bottom"><span></span></span>
-				</div>
-			</div>
-		</div>
-
-		<div id="page-footer">
-			Powered by <a href="https://www.phpbb.com/">phpBB</a>&reg; Forum Software &copy; phpBB Group
-		</div>
-	</div>
-</body>
-</html>
-
-<?php
-
-	garbage_collection();
-	exit_handler();
-}
diff --git a/phpBB/install/schemas/schema_data.sql b/phpBB/install/schemas/schema_data.sql
index 7c1a7d40f5..d9e5c46e55 100644
--- a/phpBB/install/schemas/schema_data.sql
+++ b/phpBB/install/schemas/schema_data.sql
@@ -611,6 +611,49 @@ INSERT INTO phpbb_acl_groups (group_id, forum_id, auth_option_id, auth_role_id,
 # NEW MEMBERS on the queue
 INSERT INTO phpbb_acl_groups (group_id, forum_id, auth_option_id, auth_role_id, auth_setting) VALUES (7, 2, 0, 24, 0);
 
+# Migrations
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_1', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_1_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_10', 'a:1:{i:0;s:34:"phpbb_db_migration_data_3_0_10_rc3";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_10_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_9";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_10_rc2', 'a:1:{i:0;s:34:"phpbb_db_migration_data_3_0_10_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_10_rc3', 'a:1:{i:0;s:34:"phpbb_db_migration_data_3_0_10_rc2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_11', 'a:1:{i:0;s:34:"phpbb_db_migration_data_3_0_11_rc2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_11_rc1', 'a:1:{i:0;s:30:"phpbb_db_migration_data_3_0_10";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_11_rc2', 'a:1:{i:0;s:34:"phpbb_db_migration_data_3_0_11_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_12_rc1', 'a:1:{i:0;s:30:"phpbb_db_migration_data_3_0_11";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_1_rc1', 'a:0:{}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_2', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_2_rc2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_2_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_2_rc2', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_2_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_3', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_3_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_3_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_4', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_4_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_4_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_3";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_5', 'a:1:{i:0;s:38:"phpbb_db_migration_data_3_0_5_rc1part2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_5_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_4";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_5_rc1part2', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_5_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_6', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_6_rc4";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_6_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_5";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_6_rc2', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_6_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_6_rc3', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_6_rc2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_6_rc4', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_6_rc3";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_7', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_7_rc2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_7_pl1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_7";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_7_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_6";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_7_rc2', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_7_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_8', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_8_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_8_rc1', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_7_pl1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_9', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_9_rc4";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_9_rc1', 'a:1:{i:0;s:29:"phpbb_db_migration_data_3_0_8";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_9_rc2', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_9_rc1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_9_rc3', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_9_rc2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_0_9_rc4', 'a:1:{i:0;s:33:"phpbb_db_migration_data_3_0_9_rc3";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_3_1_0_dev', 'a:4:{i:0;s:30:"phpbb_db_migration_data_3_0_11";i:1;s:34:"phpbb_db_migration_data_extensions";i:2;s:39:"phpbb_db_migration_data_style_update_p2";i:3;s:35:"phpbb_db_migration_data_timezone_p2";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_extensions', 'a:1:{i:0;s:30:"phpbb_db_migration_data_3_0_11";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_style_update_p1', 'a:1:{i:0;s:30:"phpbb_db_migration_data_3_0_11";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_style_update_p2', 'a:1:{i:0;s:39:"phpbb_db_migration_data_style_update_p1";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_timezone', 'a:1:{i:0;s:30:"phpbb_db_migration_data_3_0_11";}', 1, 1, '', 0, 0);
+INSERT INTO phpbb_migrations (migration_name, migration_depends_on, migration_schema_done, migration_data_done, migration_data_state, migration_start_time, migration_end_time) VALUES('phpbb_db_migration_data_timezone_p2', 'a:1:{i:0;s:32:"phpbb_db_migration_data_timezone";}', 1, 1, '', 0, 0);
 
 # -- Demo Topic
 INSERT INTO phpbb_topics (topic_title, topic_poster, topic_time, topic_views, topic_replies, topic_replies_real, forum_id, topic_status, topic_type, topic_first_post_id, topic_first_poster_name, topic_first_poster_colour, topic_last_post_id, topic_last_poster_id, topic_last_poster_name, topic_last_poster_colour, topic_last_post_subject, topic_last_post_time, topic_last_view_time, poll_title) VALUES ('{L_TOPICS_TOPIC_TITLE}', 2, 972086460, 0, 0, 0, 2, 0, 0, 1, 'Admin', 'AA0000', 1, 2, 'Admin', 'AA0000', '{L_TOPICS_TOPIC_TITLE}', 972086460, 972086460, '');