You can also choose to synchronize specific properties by selecting the Autofill selected account properties and checking off which properties you want to synchronize, e.g. if you use your own leadsheet numbers, you would not want it to synchronize to the default Jazzit leadsheet number, make sure the L/S checkbox is left unchecked.
After import of accounting software, if you notice some balances are backward in the Jazzit Financial Statements (for example, accounts payable appearing with brackets) you may want to choose to Autofill all account properties.