So the way to do this is to use the Marketing List 'trick'.
1. Add all the active leads to a Marketing List.
2. Then in Manage Members select, Use Advanced Find to Remove Members.
3. Now create a View filter that finds all the leads with a history record, remove all those leads.
4. You are left with all the leads that don't have any history. Then you can weed out from there.
Jerry
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