Openfire 4.0.2 doesn't save XEP-0184 delivery receipts as offline messages

Good morning,

as reported in [OF-722] issue, since version 3.9.2, openfire should support the delivery receipts storage as offline message but it seems not work on version 4.0.2.

I can not find informations about it. It is possible that no one has the same problem?

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