For the most part, Pinch detects credit notes applied to invoices, and as long as the credit is reduced to the outstanding balance, Pinch will update accordingly. However, there are some cases where this isn't the case.
Payment PlansPinch Payment plans, more specifically the Breakdown plan, were originally designed to be a "set and forget" product offering that, once agreed to, would debit for its entire duration without interruption. Because of this, if you apply a credit note to an invoice currently on an Active Breakdown Plan, Pinch will not accept the balance adjustment.
If you intend to apply credit notes to an invoice, you should commit these credits to the invoice prior to enrolling the invoice in a payment plan.