Why overlaps need a decision
A project stores removed ranges in source-frame order. When a new range intersects an existing cut, retaining both raw entries would make duration and boundary handling ambiguous. SmartCut64 therefore resolves the overlap into a consistent set.
Prompt or automatic replacement
By default the editor can ask whether the new selection should replace the overlapping cut or be cancelled. Enable Automatically replace overlapping cuts under Tools > Options > General when you prefer the new range to take precedence without a prompt.
Verify the result
- Check the cut-list start/end values.
- Confirm the red/green program timeline has no unintended gap.
- Preview both boundaries before export.
- Use Undo immediately if the merged/replaced result is not what you intended.