hello all, question 1 : here is my situation : I have developped a website under zope 2.5.0, mostly w/ dtml a python scripts. It is based on zclass defined in products (not external products) 3 of them were imported without pbs under Zope 2.6.1, but one of them (that has nothing special), when I import it raises : Error Type: ImportError Error Value: No module named iclass but I didn't define any iclass, it must be internal to Zope. How can I handle this ? If i rewrite the product under Zope 2.6.1, what should I do fot it to be able to handle mt ols instances ? reuse the same class id ? any pointer appreciated. question 2: when i import folders, the bobobase_modification_time of all the objects is reset to the date of importation. how can I keep this date unchanged when importing ? thank you for your answers zopers.