Register Shows Credit in Client Invoices, But Balance is Zero

rkjones

So, I have an odd one . . . my "Client Invoices" account shows that I have a $65.00 credit in it:

However, it shouldn't. All of the transactions in the account total to zero. If, for example, I download the transactions to a CSV and then have Excel sum up all the transactions, they total to zero:

Why is it doing this? There is a client that regularly has a $65 transaction, but each of those transactions appears to be balanced . . . there's an inflow and an outflow.

Thanks for your help!