Doesn't make sense to me. The system records the last time the object was used, period. :-) And you can't make it "null", because the last used date naturally can't be older than the last change date.But you absolutely can have an object which has a last change date, yet has 0 days used and no last used date. We have loads of them on our system.
What goal do you want to achieve?Clearly he wants the object to appear as though it has never been used.
It's not hard to imagine some situations where you'd want an object to appear "pristine". I will grant that in most such cases, resetting the last used date is probably a nice-to-have; and the presence of 0 days used should be sufficient from a functionality standpoint.
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