Seems you're not the only one:
http://www.moreawesomethanyou.com/smf/index.php/topic,6177.msg176097.htmlRegarding SimPe's surgery, the only thing I know is that the "Export" function does not work with pet characters.
But you can try to use an existing pet as the template (archetype), and see if surgery works. I would guess that only a full clone (without any checked options) will make the correct result.