Once a month is closed, the closing page reports that it is already closed. You do not reopen the wizard to make a correction.
Correct an account
Open Financial assets, choose the institution and product, then edit the relevant row in Entry history.
Correct a physical asset
Open Physical assets, select the asset, and edit the row in Valuation history.
Correct a liability
Open Liabilities, select the liability, and edit the row in History.
The monthly overview grids for Financial assets and Physical assets also support quick edits: expand the relevant institution when necessary and double-click the monthly value.
Correcting historical records can update net-worth history, month-over-month and year-over-year changes, performance, savings metrics, debt paydown, projections, and later AI context. Delete an entry only if the month should contain no value; deletion is permanent.