[Zope] maintaining last_modified_date when copying an object

Hi, I've written a short Script (Python) to copy objects from an existing Folder to a new BTree Folder. If possible, I'd like to maintain the original last_modified date of the copied objects - is there a simple way of doing this ? Script is as below... Thanks! PETER SKIPWORTH SYSTEM ADMINISTRATOR TOUCHCORP LTD TELEPHONE 03 9635 2626 www.touchcorp.com dest_base = context.restrictedTraverse('/Contacts_BTree') src_base = context.restrictedTraverse('/Contacts') cont_list = src_base.objectItems() # where the objects to copy live for src_id, src_obj in cont_list: print src_id copy_info = src_base.manage_copyObjects((src_id)) dest_base.manage_pasteObjects(copy_info)