You can copy any price list to another location in the Price Lists tree. Copying a parent price list does not move its children, but does clear the children’s Base Price List property. Copying a child price list does not affect its parents.
To copy a price list:
In a Commerce Assets project, navigate to Price Lists and show Price Lists.
In the Navigation pane, click the check box next to the price list that you want to copy.
Click the Duplicate icon.
In the Select Destination dialog, use the Search tab or the Browse tab to locate and select the price list where you want to nest the child price list. Click OK.