Hi all, I have to containers old_container and new_container that accept objects of the same type. The two containers are actually instances of different classes in the same product. I want to move all the objects from old_container to new_container. I have tried with only one object: 1. To move it with a simple Cut/Paste operation through ZMI: the object is moved successfully, but has missing properties 2. I have used Import/Export to move the same object: the object is imported successfully, but also has missing properties 3. Even tried a simple Copy/Paste: same result, no errors but missing properties Basically, the code for the object to be moved is like this: class Country(Discussion, Folder): _properties = ( Discussion._properties + ( {'id': 'body', 'type': 'text', 'mode': 'w'}, ) ) def __init__(self, id, title, body, comments, flg_notify): self.id = id self.title = title self.body = body Discussion.__dict__['__init__'](self, comments, flg_notify) def check_properties(self): """ """ print hasattr(self, 'body') print hasattr(self, 'comments') and class Discussion: _properties = ( ( {'id': 'comments', 'type': 'int', 'mode': 'w'}, {'id': 'flg_notify', 'type': 'int', 'mode': 'w'}, ) ) def __init__(self, comments, flg_notify): self.comments = comments self.flg_notify = flg_notify If i run the method check_properties before move/copy/import it prints True+True. After step 1/2/3 the result is True+False. So the missing property is 'comments', that comes from the extended class Discussion. If a I trie to acces the Propeties tab, manage_propertiesForm method, I get: Traceback (innermost last): Module ZPublisher.Publish, line 119, in publish Module ZPublisher.mapply, line 88, in mapply Module ZPublisher.Publish, line 42, in call_object Module Shared.DC.Scripts.Bindings, line 313, in __call__ Module Shared.DC.Scripts.Bindings, line 350, in _bindAndExec Module App.special_dtml, line 178, in _exec Module DocumentTemplate.DT_In, line 703, in renderwob Module DocumentTemplate.DT_Let, line 76, in render Module DocumentTemplate.DT_Util, line 196, in eval - __traceback_info__: id Module <string>, line 0, in ? Module OFS.PropertyManager, line 151, in getProperty AttributeError: comments Am I doing something wrong? Any idea is highly appreciated. Thank you very much, Dragos -- Dragos Chirila objectValues@gmail.com (+4) 0722 395375