Why do some of my items show Previously Purchased Items when I first open the invoice, but not the others?

New items will show Previously Purchased Items (PPIs) if Review New Items is turned on for that vendor.

So, once in Edit mode, we show you all PPIs that:

• Exactly match you SKU if it exists
• Else, approximately match your name

So items not showing PPIs either

1. The vendor is not set to Review New Items
2. The item has not been purchased before