So far, I'm liking the changes in Billings 3. However, there appears to be a problem with the account balance calculation that appears at the bottom of the client's account summary report.

One of my clients overpaid one of his invoices last year, so I created a retainer and applied it against his next invoice to basically zero everything out. However, Billings 3 reported that he still owed $0.09 (the amount of his overpayment). So, trying to fix this, I deleted the retainer and associated payment, and simply subtracted $0.09 from the payment slip on his next invoice (this should still have zeroed everything out). Yet, Billings still reports that he owes me $0.09 as a red "Overdue" button even though the account balance total reads $0 (as it should).

Is there a proper way to "fix" this or is this a bug?

Thanks!

I am glad you asked!

I just answered a similar question with how to deal with overpayments here:
http://forums.marketcircle.com/eve/forums/a/tpc/f/5781056583/m/7111062955

You seem to have got most of it right without any help - good thinking! The last step now is to take the left over amount from that one overpayment and apply it to the invoice that you discounted. So find the payment that still has the left over $0.09, and edit it. (You should be able to find this payment easily in the account list, as it should have the overpayment amount showing in green under the total amount). Once editing the payment, in the section labeled "Regarding", check off the invoice that you had discounted. This should get everything working correctly.

You will notice that in Billings 3, a payment that is not fully applied to an invoice will show the overpayment amount in green, and invoices that have not been fully paid will show the amount outstanding in red.

Hopefully this helps you to get your accounts back in order!

Thanks, Fraser, that did the trick! I wonder if there should be an easier way to do this, though...