Hello again, Overtime01,

I appreciate you getting back to us.

Currently, the custom fields that you've added on your PO doesn't carry over.

QuickBooks integrate with hundreds of third-party software developers.  

To view wide-range of options of compatible third party applications, you may wish to consider looking to our third party application provider: Intuit Marketplace.

Please let me know if you have any further questions concerning your QuickBooks Desktop account, I'm always here to assist.