Zope's support for PropertySheets is very weak. They cannot be renamed or copied. They can be exported but only imported if they are empty. The reason for these restrictions: The property values are not stored in the sheet but in the associated v_self (value self). The persistence mechanism, on with copying, renaming and export is based, cannot find them in the current implementation. copyPropertySheet uses the specific PropertySheet interface to handle property values correctly. You can use it to copy a PropertySheet sheet into a container container and optionally give it a different id. sheet and container can be either strings or objects. Strings are resolved into objects with restrictedTraverse. container defaults to the sheets container. Download at URL:http://www.dieter.handshake.de/pyprojects/zope Dieter