This is exactly how QBO support goes. It's a simple F*kn question. I overpaid a vendor and I need to clear it with a refund check. Every answer except the one needed is provided...

Oh, and pay us $100/mo more for the next tier and the function is included. Such horsesh!t.

I have the same problem and no solution is provided. 

I'm just going to use a journal entry to record the cash and the expense account that should be cleared. Deleting the vendor credit I issued for the overpayment. Not clean, but at least my books are correct. 

If anyone at Intuit reads these posts, this is another example of why I will cancel this software as soon as Zoho has Colorado payroll ready to go. You suck.