The backup process doesn't appear to grab functions..
..you'll need to add it back manually.
Code:
DELIMITER $$
CREATE FUNCTION `GetMobType` (mob_name VARCHAR(64)) RETURNS CHAR(1)
BEGIN
DECLARE Result CHAR(1);
SET Result = NULL;
IF ((SELECT COUNT(*) FROM `character_data` WHERE `name` = mob_name) > 0) THEN
SET Result = 'C';
ELSEIF ((SELECT COUNT(*) FROM `bot_data` WHERE `name` = mob_name) > 0) THEN
SET Result = 'B';
END IF;
RETURN Result;
END$$
EDIT: (For anyone not sure what to do with that, run it as a query on the database)