Welcome to the QuickBooks Community, cmarswag. Processing a negative snap receipt or matching the uploaded one with a credit in QuickBooks is currently unavailable. Let me help you send feedback so the feature that you need is forwarded to the Product Development Team.

Once you upload a receipt in QuickBooks, the program extracts info from it and creates a transaction for you to review. Then, you can edit the entry, add it to an account, or match it to an existing transaction in the Receipts tab. Then, you can only link the uploaded receipts to bills or expenses.

On the other hand, I recommend going to the Gear icon in QuickBooks and you're able to enter your product suggestions from there after choosing Feedback. You can then select Next to submit the request about having the ability to allow QBO to process negative receipts.

While waiting for the option to be implemented, you'll have to manually record the entry as vendor credit in QuickBooks as a workaround. 

Lastly, refer to this article if you need steps on how you can run a particular report that will reflect all payments made to suppliers: Run a report with supplier totals.

If you need any additional assistance managing your receipts or vendor entries in QBO, you can add them below. I'm always here to assist you further. Take care!