Managing reminder lists

Is there any way to move completed items from one list to another, or to merge Reminder lists?

For instance, if I set up a list called This Weekend and a bunch of those items are now completed, I find that I can't move those items onto another list (Home or Personal, for instance) without them being marked as NOT completed. So the only way to get rid of the This Weekend list is to delete it, thereby deleting the stuff on it as well.

I suppose the limitations of Reminders are well known by now, but I wondered if anybody had any tips on this. Thanks.