How to clear old invoices with fractional balance outstanding?

We are showing a couple of older invoices with fractional amounts outstanding such as $0.0036. It shows as $0.00 but stays in the Open Invoices tab and shows on the Statements.

 

It was created accidentally when applying a percentage discount as the invoice was paid.

 

How do we clear that small amount?  MYOB won't let us adjust it with anything less than $0.01

 

Thanks,