How to clear "glitched" Purchase Order?

Hello all,

I need some help with a Purchase Order that seems to have glitched.  Long story short, I converted it to a Purchase Invoice, but it still shows in my list of active Purchase Orders:

Here are the relevant journal transactions.  You can clearly see that it went from Purchase Pre-payments to Inventory and my Purchase Pre-payments GL is showing zero:

I can go into the Purchase Order and convert it to a Purchase Invoice again, but when I try to apply the Prepaid Amount, it tells me that "The total prepayment being applied exceeds the total available prepayment."  The only other option is to put it to Cash, but then it will take the $1785 out of my bank account, right?

Help!  How do I get rid of the Purchase Order from my open Purchase Orders?  Thanks in advance.

Cheers,

Andrew