I feel like this has been posted or discussed before but I could not quickly find it. When a payment is entered, the “Total” line on the invoice does not update to “$0.00” but stays the same as it was before the payment was entered. I assume the “Total” line is intended to be the same as “balance” or “balance due”.
The total should always remain the same but the balance due should be updated.
You can configure which lines are shown on Settings > Invoice Design.
Ah! Thanks, yeah, changing the shown lines should probably do the trick.