[otrs] Remove article attachment from MySQL Database to File System

Hello, Installing my OTRS last year, I did not realize that Ticket::StorageModule was defaulted to ArticleStorageDB, meaning that all the attachments from a ticket were stored inside of mysql. Three months later I changed it to FS. Now my attachment are store on the file system. But I'd like to remove all the ticket from mysql and store them on the FS. I was wondering if there is a script to do that? Has anybody done this before? Your help will be highly appreciated. Thanks a lot, Touraman