Agree a starting date and decide which history you are bringing across before posting balances.
1. Choose the migration approach
With your accountant, decide whether customer and vendor debts will come from individual unpaid documents or opening totals. Do not enter the same debt both ways.
2. Open the starting-balance form
Go to Accounting → Opening Balances → New Opening Balance.
3. Enter the agreed position
Choose Opening Date, Currency, and Opening Equity. Enter the supported account balances and notes. Enter customer debts through each customer’s Opening Balance section and vendor debts through each vendor.
4. Review and post
Check the balancing totals and date with your accountant, then post the intended starting position. Review the resulting balances before importing any additional history.