you should be able to look in autotrak, display history log, its at the bottom of one of the drop down menus,
this will show you every move within myriad, who pressed what, if any failures occured and who deleted or imported carts.
take away the rights for those people deleting to stop this happening in the future too.
only allow users to delete their own areas, works well for me;-)
good luck !
0792 858 1075