i hope this is what you searching for...
1st) PLEASE test it AFTER you did a BACKUP from your MySQL DataBase!mysql query for phpmyadmin >>
example:UPDATE
PREFIX_categories
SET cat_parent_id = '5' where cat_parent_id = '4' and cat_id not in ('5')example description:PREFIX_ = your 4images prefix in mysql database (see config.php under $table_prefix = "xxxxx_"
SET cat_parent_id = '5' = here set your cat_id from category
2007where cat_parent_id = '4' = here set your cat_id from category
magazinesand cat_id not in ('5') = here set again your cat_id from category
2007 means this one should be not changed.
quick and no need for a mod
maybe some1 will do it one day...
gruss aus wien