diff --git a/tyl-converter.php b/tyl-converter.php
index 1fb06a3..9289108 100644
--- a/tyl-converter.php
+++ b/tyl-converter.php
@@ -1,17 +1,29 @@
 <?php
 /**
  * Filename   : tyl-converter.php
- * Author     : Dark Neo with modifications by Laird.
- * Description: Imports into the Thank You/Like System plugin the likes of
- *              either the SimpleLikes[1] plugin or the Thanks[2][3] plugin.
+ * Author     : Dark Neo and martec; combined and refactored by Laird.
+ * Description: Imports into the Thank You/Like System plugin either the
+ *              thanks/likes of the SimpleLikes[1] plugin or the Thanks[2][3]
+ *              plugin, or the reputations of the core reputation system, the
+ *              latter of which supports migration from the MyLikes[3] plugin.
  *              [1] https://community.mybb.com/mods.php?action=view&pid=24
  *              [2] https://community.mybb.com/mods.php?action=view&pid=82
+ *              [3] https://community.mybb.com/mods.php?action=view&pid=188.
  * Usage      : Install the Thank You/Like System plugin in both the filesystem
  *              and via the ACP Plugins page, then move this file into your MyBB
- *              forum's root directory and browse to it. After the conversion
- *              completes, remove this file from your forum's root directory.
- * Original Description[3]: Thanks SaeedGh & Thank You MyBB System Converter
- *              [3] Prior to Laird's mods.
+ *              board's root directory and browse to it, appending to its
+ *              address in the address bar one of:
+ *               ?from=thanks      (to convert from the Thanks plugin)
+ *               ?from=simplelikes (to convert from the SimpleLikes plugin).
+ *               ?from=reputation  (to convert from core reputations).
+ *              If you do not append any of the above, the script will attempt
+ *              to auto-detect the plugin from which you are migrating, but for
+ *              safety, it will not auto-detect the core reputation system as a
+ *              source, so in that case the ?from=reputation is required.
+ *              After the conversion completes, remove this file from your
+ *              forum's root directory.
+ * Original Description[4]: Thanks SaeedGh & Thank You MyBB System Converter
+ *              [4] Prior to martec's additions and Laird's modifications.
  */
 
 define('IN_MYBB', 1);
@@ -19,23 +31,49 @@
 define('THIS_SCRIPT', 'MULTI_SRC_TYL_CONVERSION_SCRIPT');
 ini_set('max_execution_time', 300);
 $prefix = 'g33k_';
-$do_conversion = false;
+$sort_function = $do_conversion = false;
+$from = $mybb->get_input('from', MyBB::INPUT_STRING);
 
 if (!$db->table_exists($prefix.'thankyoulike_thankyoulike')) {
 	echo '<span style="color: red;">Fatal error:</span> The Thank You/Like System plugin is not installed.';
 	exit;
-} else if ($db->table_exists('thx')) {
-	$do_conversion = true;
-	$query = $db->simple_select('thx', 'pid, adduid as uid, uid as puid, time as dateline');
-	$tyl_from_type = 'thanks';
-	$from_plugin_name = 'the Thanks plugin';
-} else if ($db->table_exists('post_likes')) {
+} else if ($from === 'thanks' || empty($from) && $db->table_exists('thx')) {
+	if (!$db->table_exists('thx')) {
+		echo '<span style="color: red;">Fatal error:</span> You selected via the "from" query parameter to convert from the Thanks plugin, however, its table was not found in the database.';
+	} else {
+		$do_conversion = true;
+		$query = $db->simple_select('thx', 'pid, adduid as uid, uid as puid, time as dateline');
+		$tyl_from_type = 'thanks';
+		$from_plugin_name = 'the Thanks plugin';
+	}
+} else if ($from == 'simplelikes' || empty($from) && $db->table_exists('post_likes')) {
+	if (!$db->table_exists('post_likes')) {
+		echo '<span style="color: red;">Fatal error:</span> You selected via the "from" query parameter to convert from the SimpleLikes plugin, however, its table was not found in the database.';
+	} else {
+		$do_conversion = true;
+		$query = $db->query('SELECT pl.post_id as pid, pl.user_id as uid, p.uid as puid, UNIX_TIMESTAMP(pl.created_at) as dateline FROM '.TABLE_PREFIX.'post_likes pl INNER JOIN '.TABLE_PREFIX.'posts p ON pl.post_id = p.pid');
+		$tyl_from_type = 'likes';
+		$from_plugin_name = 'the SimpleLikes plugin';
+	}
+} else if ($from === 'reputation') {
 	$do_conversion = true;
-	$query = $db->query('SELECT pl.post_id as pid, pl.user_id as uid, p.uid as puid, UNIX_TIMESTAMP(pl.created_at) as dateline FROM '.TABLE_PREFIX.'post_likes pl INNER JOIN '.TABLE_PREFIX.'posts p ON pl.post_id = p.pid');
-	$tyl_from_type = 'likes';
-	$from_plugin_name = 'the SimpleLikes plugin';
+	$query = $db->simple_select('reputation', 'pid, adduid as uid, uid as puid, dateline', 'reputation > 0 AND pid > 0');
+	$tyl_from_type = 'reputations';
+	$from_plugin_name = 'core reputations (compatible with the MyLikes plugin)';
+	$sort_function = function(&$rows) {
+		//https://stackoverflow.com/a/3233009
+		# get a list of sort columns and their data to pass to array_multisort
+		$sort = array();
+		$sort['pid'] = $sort['uid'] = array();
+		foreach ($rows as $k => $v) {
+			$sort['pid'][$k] = $v['pid'];
+			$sort['uid'][$k] = $v['uid'];
+		}
+		# sort by pid asc and then uid asc
+		array_multisort($sort['pid'], SORT_ASC, $sort['uid'], SORT_ASC, $rows);
+	};
 } else {
-	echo '<span style="color: red;">Fatal error:</span> a compatible thanks/likes system from which to convert thanks/likes was not detected.';
+	echo '<span style="color: red;">Fatal error:</span> a compatible thanks/likes plugin from which to convert thanks/likes was not detected.';
 	exit;
 }
 
@@ -43,22 +81,35 @@
 	if (empty($query)) {
 		echo "<span style=\"color: orange;\">Warning:</span> no {$tyl_from_type} found in the database table for {$from_plugin_name}. Nothing to convert, so no conversion performed.";
 	} else {
-		$batch = $total = 0;
-		$rows = array();
+		$sel_rows = array();
 		while ($row = $db->fetch_array($query)) {
-			$rows[] = $row;
-			$batch++;
-			$total++;
+			$sel_rows[] = $row;
+		}
+		$db->free_result($query);
+
+		if ($sort_function) {
+			$sort_function($sel_rows);
+		}
+
+		$prev_pid = $prev_uid = $batch = $total = 0;
+		foreach ($sel_rows as $row) {
+			if ($prev_pid != (int)$row['pid'] || $prev_uid != (int)$row['uid']) {
+				$ins_rows[] = $row;
+				$prev_pid = (int)$row['pid'];
+				$prev_uid = (int)$row['uid'];
+				$batch++;
+				$total++;
+			}
 			if ($batch == 1000) {
-				$db->insert_query_multiple($prefix.'thankyoulike_thankyoulike', $rows);
-				$rows = array();
+				$db->insert_query_multiple($prefix.'thankyoulike_thankyoulike', $ins_rows);
+				$ins_rows = array();
 				$batch = 0;
-				echo "Converted {$total} {$tyl_from_type} from {$from_plugin_name} into thank yous / likes for the Thank You/Like System plugin so far.<br/>";
+				echo "Converted {$total} {$tyl_from_type} so far from {$from_plugin_name} into thank yous / likes for the Thank You/Like System plugin.<br/>";
 			}
 		}
 		if ($batch > 0) {
-			$db->insert_query_multiple($prefix.'thankyoulike_thankyoulike', $rows);
+			$db->insert_query_multiple($prefix.'thankyoulike_thankyoulike', $ins_rows);
 		}
-		echo "<span style=\"color: green;\">Done!</span> Converted {$total} {$tyl_from_type} from {$from_plugin_name} into thank yous / likes for the Thank You/Like System plugin in total.";
+		echo "<span style=\"color: green;\">Done!</span> Converted {$total} {$tyl_from_type} in total from {$from_plugin_name} into thank yous / likes for the Thank You/Like System plugin.";
 	}
 }