I hear your sentiments, Buynet.

It isn't the kind of experience we want you to come across.

Upon checking, the investigation about disappearing purchase orders is still open. 

If you haven't contacted our support, I'd suggest giving it a try so we can add you as one of the affected users.

You can reach out to them through the  Help menu.

Once everything's good, you can check this reference for more information about Purchase Orders as part of the Accounts Payable (A/P) workflow: The A/P workflow in QuickBooks Desktop.

We appreciate your patience while we're working to resolve this issue the soonest.