This functionality is new as of version 4.1.
To View the Purchase Order History for a Product Reorder Item:
Navigate to the 'Product Reorder' screen.
Refer to Search Product Reorder Lists.
Right-click the row that represents the Product Reorder Item; OR,
Click the ‘Pancake’ icon at the right end of the row.
If the row is new, be sure to save before attempting to view the Purchase History.
Click the ‘View Purchase History’ option.
The 'Purchase Order History' dialog will open and display the most recent 5 Purchase Orders on which the Product Reorder Item was ordered.