Manufacturers part number does not appear in item listings

Good morning, @Twin Orchards. 

Thanks for coming to the QuickBooks Community with your question about the manufacturing part number on the Item Listing reports. 

 Let's try to narrow down the cause of the missing icon so that you can have these numbers on this report. I recommend clearing your browser's history first before we digger further into the issue. 

As for the deleted items that you're referring to, once you delete items they are gone. However, you can review the audit log for the delete item and get all the information from the item there to recreate it in QBO. 

I'll be waiting for your response to see if we need to do some additional steps to help get this numbers on the report again. Talk soon! 

I am not using a browser to run QBO.  I’m using the desktop APP.  I did not see in your reply anything noting how to fix the problem using the app.  Is there something I can do in the app that would allow me to view these missing MPN numbers in my item report?

I was completely unaware that hidden items would be deleted off of my file when I converted it to online.  I wish this was something that was relayed to me before I made the switch so I could fix it.