A change order formalizes a modification of the initial contract: additional work, scope or price changes.
From the project, create a change order by entering a title, an amount and, if needed, the related quote. A number is assigned automatically (AV01, AV02…). As long as it is not signed, the change order stays in draft status.
Once signed (with its date), the change order amount is added to the initial budget to form the revised contract, which becomes the new reference for budget tracking and invoicing. You keep full traceability of the contract's evolution.