Thanks for the update and getting back to us here in the Community, Migrating to On-Line.

An item's quantity will reflect as zero in the QTY ON PO column in the Products and Services list once the PO is added or linked to an expense transaction (for example, bill or expense). (Please see the screenshot below for your reference). Let's go to your vendor profile's Transaction List tab to verify its status. I'll show you on how to do this accordingly.

After a vendor accepts a purchase order, record it as a bill or expense. This closes your PO and connects it to your expense transaction to keep your accounting data accurate. You can visit your vendor profile's Transaction List tab to verify the status of your PO. Here's how:

1. Go to the Expenses menu.
2. Select the Vendors tab.
3. Find your vendor and select their name to open their profile.
4. Go to the Transaction List tab.
5. Filter your transactions to easily locate your PO. Check its status under the STATUS column.

Additionally, you can use reports to get helpful insights on the items you buy and sell and the status of your inventory. If you wish to know which ones to run depending on the kind of information you want to see, you can check out this article: Use reports to see your sales and inventory status.

Please let me know in the comments if you have other concerns about managing PO and expense transactions in QBO. I'm always ready to help.