I know this has been asked numerous times before (once by me!), and I'm sorry to cover the same ground again, but I've spent all afternoon searching through the list archives to no avail. I have a zclass that is catalogaware (selected first and all that). When I add an instance, it gets cataloged and all is fine. I followed the how to (http://www.zope.org/Members/AlexR/CatalogAware) and successfully made my instance get reindexed when the properties are changed, but I can't for the life of me figure out or find anywhere that can tell me how to make the instance get reindexed when it is edited. I'm assuming that it is similar to the process for reindexing when the properties are changed, but I'm just not sure of the details. If it's not too much trouble, could someone give me detailed instructions (or a link) on how to do this. I'd really appreciate it. cheers tim