diff --git a/misc/testing/PreDB/dump_predb.php b/misc/testing/PreDB/dump_predb.php
new file mode 100644
index 000000000..16b184e7a
--- /dev/null
+++ b/misc/testing/PreDB/dump_predb.php
@@ -0,0 +1,112 @@
+<?php
+require_once dirname(__FILE__) . '/../../../www/config.php';
+
+use newznab\db\Settings;
+
+$pdo = new Settings();
+
+$path = '';
+if (isset($argv[2])) {
+	if (!preg_match('/^\//', $argv[2])) {
+		$path = getcwd() . '/' . $argv[2];
+	} else {
+		$path = $argv[2];
+	}
+}
+
+if (isset($argv[1]) && $argv[1] == 'export' && isset($argv[2])) {
+	if (!preg_match('/\.csv$/', $path)) {
+		$path = dirname($path) . '/' . basename($path) . '/predb_dump.csv';
+	}
+
+	if (!preg_match('/^\//', $path)) {
+		$path = getcwd() . '/' . $path;
+	}
+
+	if (file_exists($path) && is_file($path)) {
+		unlink($path);
+	}
+	if (isset($argv[3])) {
+		$table = $argv[3];
+	} else {
+		$table = 'prehash';
+	}
+	echo  $pdo->log->header("SELECT title, nfo, size, files, filename, nuked, nukereason, category, predate, source, requestid, g.name FROM " . $table . " p LEFT OUTER JOIN groups g ON p.groupid = g.id INTO OUTFILE '" . $path . "' FIELDS TERMINATED BY '\\t\\t' ENCLOSED BY \"'\" LINES TERMINATED BY '\\r\\n';n");
+	$pdo->queryDirect("SELECT title, nfo, size, files, filename, nuked, nukereason, category, predate, source, requestid, g.name FROM " . $table . " p LEFT OUTER JOIN groups g ON p.groupid = g.id INTO OUTFILE '" . $path . "' FIELDS TERMINATED BY '\t\t' ENCLOSED BY \"'\" LINES TERMINATED BY '\r\n'");
+} else if (isset($argv[1]) && ($argv[1] == 'local' || $argv[1] == 'remote') && isset($argv[2]) && is_file($argv[2])) {
+	if (!preg_match('/^\//', $path)) {
+		$path = require_once getcwd() . '/' . $argv[2];
+	}
+	if (isset($argv[3])) {
+		$table = $argv[3];
+	} else {
+		$table = 'prehash';
+	}
+
+	// Truncate prehash_imports to clear any old data
+	$pdo->queryDirect("TRUNCATE TABLE prehash_imports");
+
+	// Import file into prehash_imports
+	if ($argv[1] == 'remote') {
+		echo  $pdo->log->header("LOAD DATA LOCAL INFILE '" . $path . "' IGNORE into table prehash_imports FIELDS TERMINATED BY '\\t\\t' ENCLOSED BY \"'\" LINES TERMINATED BY '\\r\\n' (title, nfo, size, files, filename, nuked, nukereason, category, predate, source, requestid, groupname);");
+		$pdo->queryDirect("LOAD DATA LOCAL INFILE '" . $path . "' IGNORE into table prehash_imports FIELDS TERMINATED BY '\t\t' ENCLOSED BY \"'\" LINES TERMINATED BY '\r\n' (title, nfo, size, files, filename, nuked, nukereason, category, predate, source, requestid, groupname)");
+	} else {
+		echo  $pdo->log->header("LOAD DATA INFILE '" . $path . "' IGNORE into table prehash_imports FIELDS TERMINATED BY '\\t\\t' ENCLOSED BY \"'\" LINES TERMINATED BY '\\r\\n' (title, nfo, size, files, filename, nuked, nukereason, category, predate, source, requestid, groupname);");
+		$pdo->queryDirect("LOAD DATA INFILE '" . $path . "' IGNORE into table prehash_imports FIELDS TERMINATED BY '\t\t' ENCLOSED BY \"'\" LINES TERMINATED BY '\r\n' (title, nfo, size, files, filename, nuked, nukereason, category, predate, source, requestid, groupname)");
+	}
+
+	// Remove any titles where length <=8
+	echo $pdo->log->info("Deleting any records where title <=8 from Temporary Table");
+	$pdo->queryDirect("DELETE FROM prehash_imports WHERE LENGTH(title) <= 8");
+
+	// Add any groups that do not currently exist
+	$sqlAddGroups = <<<SQL_ADD_GROUPS
+INSERT IGNORE INTO groups (`name`, description)
+	SELECT groupname, 'Added by prehash import script'
+	FROM prehash_imports AS t LEFT JOIN groups AS g ON t.`groupname` = g.`name`
+	WHERE t.`groupname` IS NOT NULL AND g.`name` IS NULL
+	GROUP BY groupname;
+SQL_ADD_GROUPS;
+	$pdo->queryDirect($sqlAddGroups);
+
+	// Drop triggers on prehash
+	echo $pdo->log->info("Dropping predb_hashes triggers");
+	$pdo->queryDirect("DROP TRIGGER IF EXISTS insert_hashes");
+	$pdo->queryDirect("DROP TRIGGER IF EXISTS update_hashes");
+
+	// Insert and update table
+	$sqlInsert = <<<SQL_INSERT
+INSERT INTO $table (title, nfo, size, files, filename, nuked, nukereason, category, predate, SOURCE, requestid, groupid)
+  SELECT t.title, t.nfo, t.size, t.files, t.filename, t.nuked, t.nukereason, t.category, t.predate, t.source, t.requestid, IF(g.id IS NOT NULL, g.id, 0)
+    FROM prehash_imports AS t
+	LEFT OUTER JOIN groups g ON t.groupname = g.name ON DUPLICATE KEY UPDATE prehash.nfo = IF(prehash.nfo IS NULL, t.nfo, prehash.nfo),
+	  prehash.size = IF(prehash.size IS NULL, t.size, prehash.size),
+	  prehash.files = IF(prehash.files IS NULL, t.files, prehash.files),
+	  prehash.filename = IF(prehash.filename = '', t.filename, prehash.filename),
+	  prehash.nuked = IF(t.nuked > 0, t.nuked, prehash.nuked),
+	  prehash.nukereason = IF(t.nuked > 0, t.nukereason, prehash.nukereason),
+	  prehash.category = IF(prehash.category IS NULL, t.category, prehash.category),
+	  prehash.requestid = IF(prehash.requestid = 0, t.requestid, prehash.requestid),
+	  prehash.groupid = IF(g.id IS NOT NULL, g.id, 0);
+SQL_INSERT;
+	echo $pdo->log->primary($sqlInsert);
+	$pdo->queryDirect($sqlInsert);
+
+	// Add hashes
+	echo $pdo->log->info("Adding predb_hashes entries");
+	$pdo->queryDirect("INSERT IGNORE INTO predb_hashes (pre_id, hashes) (SELECT id, CONCAT_WS(',', MD5(title), MD5(MD5(title)), SHA1(title)) FROM prehash)");
+
+	// Re-add triggers on prehash
+	echo $pdo->log->info("Adding predb_hashes triggers");
+	$pdo->exec("CREATE TRIGGER insert_hashes AFTER INSERT ON prehash FOR EACH ROW BEGIN INSERT INTO predb_hashes (pre_id, hashes) VALUES (NEW.id, CONCAT_WS(',', MD5(NEW.title), MD5(MD5(NEW.title)), SHA1(NEW.title))); END;");
+	$pdo->exec("CREATE TRIGGER update_hashes AFTER UPDATE ON prehash FOR EACH ROW BEGIN IF NEW.title != OLD.title THEN UPDATE predb_hashes SET hashes = CONCAT_WS(',', MD5(NEW.title), MD5(MD5(NEW.title)), SHA1(NEW.title)) WHERE pre_id = OLD.id; END IF; END;");
+
+	$pdo->queryDirect("TRUNCATE TABLE prehash_imports");
+} else {
+	exit($pdo->log->error("\nThis script can export or import a prehash dump file. You may use the full path, or a relative path.\n"
+					. "For importing, the script insert new rows and update existing matched rows. For databases not on the local system, use remote, else use local.\n"
+					. "For exporting, the path must be writeable by mysql, any existing file[predb_dump.csv] will be
+					overwritten.\n\n"
+					. "php dump_predb.php export /path/to/write/to                     ...: To export.\n"
+					. "php dump_predb.php [remote | local] /path/to/filename           ...: To import.\n"));
+}
diff --git a/newznab/build/newznab.xml b/newznab/build/newznab.xml
index c92a8c819..7cfb4b21b 100644
--- a/newznab/build/newznab.xml
+++ b/newznab/build/newznab.xml
@@ -2,8 +2,8 @@
 <newznab>
 	<versions>
 		<sql>
-			<db>163</db>
-			<file>163</file>
+			<db>164</db>
+			<file>164</file>
 		</sql>
 		<git>
 			<tag>0.4.1</tag>
diff --git a/resources/db/patches/0164~prehash_imports.sql b/resources/db/patches/0164~prehash_imports.sql
new file mode 100644
index 000000000..05800047a
--- /dev/null
+++ b/resources/db/patches/0164~prehash_imports.sql
@@ -0,0 +1,34 @@
+DROP TABLE IF EXISTS tmp_pre;
+DROP TABLE IF EXISTS prehash_imports;
+CREATE TABLE prehash_imports (
+  title      VARCHAR(255)
+             COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
+  nfo        VARCHAR(255)
+             COLLATE utf8_unicode_ci          DEFAULT NULL,
+  size       VARCHAR(50)
+             COLLATE utf8_unicode_ci          DEFAULT NULL,
+  category   VARCHAR(255)
+             COLLATE utf8_unicode_ci          DEFAULT NULL,
+  predate    DATETIME                         DEFAULT NULL,
+  source     VARCHAR(50)
+             COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
+  requestid  INT(10) UNSIGNED        NOT NULL DEFAULT '0',
+  group_id   INT(10) UNSIGNED        NOT NULL DEFAULT '0'
+  COMMENT 'FK to groups',
+  nuked      TINYINT(1)              NOT NULL DEFAULT '0'
+  COMMENT 'Is this pre nuked? 0 no 2 yes 1 un nuked 3 mod nuked',
+  nukereason VARCHAR(255)
+             COLLATE utf8_unicode_ci          DEFAULT NULL
+  COMMENT 'If this pre is nuked, what is the reason?',
+  files      VARCHAR(50)
+             COLLATE utf8_unicode_ci          DEFAULT NULL
+  COMMENT 'How many files does this pre have ?',
+  filename   VARCHAR(255)
+             COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
+  searched   TINYINT(1)              NOT NULL DEFAULT '0',
+  groupname  VARCHAR(255)
+             COLLATE utf8_unicode_ci          DEFAULT NULL
+)
+  ENGINE =MYISAM
+  DEFAULT CHARSET =utf8
+  COLLATE =utf8_unicode_ci;