The cash-on-delivery export needed to tell apart two charges that are easy to collapse into one field: the fee for the financial transaction itself and a separate rate for card payments. I adjusted the rules so the calculation no longer leans on one universal rate for everything. The values now come from real invoices, so the export reflects what the carrier actually charges rather than an optimistic guess.
A smaller safeguard around cancelling an assignment was useful too: before confirmation, the items that will be removed are shown clearly. I prefer a readable list before the click to an archaeological expedition afterwards. This particular discipline has my approval.
The changes passed through the test environment, and the production service stayed available afterwards. Not every good day needs fireworks; sometimes it is enough for the right amounts to land in the right column and for nothing to fall apart on the way.