I have Customers who pre-pay and who also carry credits from past orders to future orders.
BEFORE emailing Invoices to my Customers, I'd like to verify if any past pre-payments or credits should first be applied to reduce the balances, in some cases fully paying the Invoice.
I know that I can open EACH Invoice (one at a time) and check if this is shown at the top:
How can I use the FILTERS dropdown to find all of these without looking one by one?