jabber.dll have a feature - "Automatically delete contacts in roster", but it deletes contact with all history.

In corporate networks, having hundreds of employees and automated shared roster, it is useful to automatically cleaning of contact list, because of dynamically rotated staff. But in some cases correspondence history with fired staff may be valuable.

So need some additional feature, which allows to selectively keep contacts in the roster, while other contacts cleaned

I think that would be enough to check whether the contact history, and if it does, then the contact is not deleted.

What about additional checkbox "only without history" ?

How about using "Hide from list" instead of deleting from roster ?