Legacy parts lists can be manually converted to the current type of parts list.
Converting can change the parts list contents. BOM equivalency grouping, BOM quantity overrides, and BOM structure attributes are applied on conversion. Parts list merging is discarded on conversion.
Conversion keeps overrides only for the targeted parts list. Overrides for other parts lists which use the same source are discarded.
Note: The parts list icon in the browser corresponds with the parts list type:
indicates a legacy parts list. 
indicates a converted parts list.
To convert a legacy parts list:
- Right-click the legacy parts list in the drawing browser, or in the graphic window.
- Choose Convert from the menu.
- The parts list is converted and its icon in the browser is changed.