1. Go to Office > Inventory then select the appropriate page (Products > Manage Products, Rentals, etc.).
2. Turn the "List Archived Items Only" search filter ON
3. Search for the part using the other available filters (keyword, category, etc.); click Search.
4. On the right side of the search results list, you will see each archived item as a Re-Activate link. Click this to bring the item back to active inventory.